move Castable into dom::bindings::inheritance

components/script/devtools.rs

@@ -8,8 +8,9 @@ use devtools_traits::{EvaluateJSReply, Modification, NodeInfo, TimelineMarker, T
 use dom::bindings::codegen::Bindings::DOMRectBinding::{DOMRectMethods};
 use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::ElementBinding::{ElementMethods};
-use dom::bindings::conversions::{Castable, FromJSValConvertible, jsstring_to_str};
+use dom::bindings::conversions::{FromJSValConvertible, jsstring_to_str};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::element::Element;
 use dom::node::Node;

components/script/dom/activation.rs

@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::element::Element;
 use dom::event::{Event, EventBubbles, EventCancelable};
 use dom::eventtarget::EventTarget;

components/script/dom/attr.rs

@@ -6,8 +6,8 @@ use cssparser::RGBA;
 use devtools_traits::AttrInfo;
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::AttrBinding::{self, AttrMethods};
-use dom::bindings::conversions::Castable;
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutNullableHeap};
 use dom::bindings::js::{LayoutJS, Root, RootedReference};
 use dom::bindings::utils::{Reflector, reflect_dom_object};

components/script/dom/bindings/conversions.rs

@@ -34,6 +34,7 @@
 
 use core::nonzero::NonZero;
 use dom::bindings::error::throw_type_error;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::num::Finite;
 use dom::bindings::str::{ByteString, USVString};
@@ -107,32 +108,6 @@ pub trait IDLInterface {
     fn derives(&'static DOMClass) -> bool;
 }
 
-/// A trait to hold the cast functions of IDL interfaces that either derive
-/// or are derived from other interfaces.
-pub trait Castable: IDLInterface + Reflectable + Sized {
-    /// Check whether a DOM object implements one of its deriving interfaces.
-    fn is<T>(&self) -> bool where T: DerivedFrom<Self> {
-        let class = unsafe {
-            get_dom_class(self.reflector().get_jsobject().get()).unwrap()
-        };
-        T::derives(class)
-    }
-
-    /// Cast a DOM object upwards to one of the interfaces it derives from.
-    fn upcast<T>(&self) -> &T where T: Castable, Self: DerivedFrom<T> {
-        unsafe { mem::transmute(self) }
-    }
-
-    /// Cast a DOM object downwards to one of the interfaces it might implement.
-    fn downcast<T>(&self) -> Option<&T> where T: DerivedFrom<Self> {
-        if self.is::<T>() {
-            Some(unsafe { mem::transmute(self) })
-        } else {
-            None
-        }
-    }
-}
-
 /// A trait to mark an IDL interface as deriving from another one.
 #[rustc_on_unimplemented = "The IDL interface `{Self}` is not derived from `{T}`."]
 pub trait DerivedFrom<T: Castable>: Castable {}

components/script/dom/bindings/inheritance.rs

@@ -0,0 +1,34 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::conversions::get_dom_class;
+use dom::bindings::conversions::{DerivedFrom, IDLInterface};
+use dom::bindings::utils::Reflectable;
+use std::mem;
+
+/// A trait to hold the cast functions of IDL interfaces that either derive
+/// or are derived from other interfaces.
+pub trait Castable: IDLInterface + Reflectable + Sized {
+    /// Check whether a DOM object implements one of its deriving interfaces.
+    fn is<T>(&self) -> bool where T: DerivedFrom<Self> {
+        let class = unsafe {
+            get_dom_class(self.reflector().get_jsobject().get()).unwrap()
+        };
+        T::derives(class)
+    }
+
+    /// Cast a DOM object upwards to one of the interfaces it derives from.
+    fn upcast<T>(&self) -> &T where T: Castable, Self: DerivedFrom<T> {
+        unsafe { mem::transmute(self) }
+    }
+
+    /// Cast a DOM object downwards to one of the interfaces it might implement.
+    fn downcast<T>(&self) -> Option<&T> where T: DerivedFrom<Self> {
+        if self.is::<T>() {
+            Some(unsafe { mem::transmute(self) })
+        } else {
+            None
+        }
+    }
+}

components/script/dom/bindings/js.rs

@@ -24,7 +24,8 @@
 //!
 
 use core::nonzero::NonZero;
-use dom::bindings::conversions::{Castable, DerivedFrom};
+use dom::bindings::conversions::DerivedFrom;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::trace::JSTraceable;
 use dom::bindings::trace::trace_reflector;
 use dom::bindings::utils::{Reflectable, Reflector};

components/script/dom/canvasrenderingcontext2d.rs

@@ -14,9 +14,9 @@ use dom::bindings::codegen::Bindings::CanvasRenderingContext2DBinding::CanvasWin
 use dom::bindings::codegen::Bindings::ImageDataBinding::ImageDataMethods;
 use dom::bindings::codegen::UnionTypes::HTMLImageElementOrHTMLCanvasElementOrCanvasRenderingContext2D;
 use dom::bindings::codegen::UnionTypes::StringOrCanvasGradientOrCanvasPattern;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::{Error, Fallible};
 use dom::bindings::global::{GlobalField, GlobalRef};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, LayoutJS, Root};
 use dom::bindings::num::Finite;
 use dom::bindings::utils::{Reflector, reflect_dom_object};

components/script/dom/characterdata.rs

@@ -7,7 +7,7 @@
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::CharacterDataBinding::CharacterDataMethods;
 use dom::bindings::codegen::UnionTypes::NodeOrString;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::js::{LayoutJS, Root};
 use dom::document::Document;

components/script/dom/closeevent.rs

@@ -5,9 +5,9 @@
 use dom::bindings::codegen::Bindings::CloseEventBinding;
 use dom::bindings::codegen::Bindings::CloseEventBinding::CloseEventMethods;
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::utils::reflect_dom_object;
 use dom::event::{Event, EventBubbles, EventCancelable};

components/script/dom/cssstyledeclaration.rs

@@ -3,9 +3,9 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::CSSStyleDeclarationBinding::{self, CSSStyleDeclarationMethods};
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, Root};
 use dom::bindings::utils::{Reflector, reflect_dom_object};
 use dom::element::{Element, StylePriority};

components/script/dom/customevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::CustomEventBinding;
 use dom::bindings::codegen::Bindings::CustomEventBinding::CustomEventMethods;
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{MutHeapJSVal, Root};

components/script/dom/dedicatedworkerglobalscope.rs

@@ -8,9 +8,9 @@ use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::DedicatedWorkerGlobalScopeBinding;
 use dom::bindings::codegen::Bindings::DedicatedWorkerGlobalScopeBinding::DedicatedWorkerGlobalScopeMethods;
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::ErrorResult;
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root, RootCollection};
 use dom::bindings::refcounted::LiveDOMReferences;
 use dom::bindings::structuredclone::StructuredCloneData;

components/script/dom/document.rs

@@ -16,9 +16,9 @@ use dom::bindings::codegen::Bindings::PerformanceBinding::PerformanceMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::codegen::InheritTypes::{ElementTypeId, HTMLElementTypeId, NodeTypeId};
 use dom::bindings::codegen::UnionTypes::NodeOrString;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::RootedReference;
 use dom::bindings::js::{JS, LayoutJS, MutNullableHeap, Root};
 use dom::bindings::num::Finite;

components/script/dom/documentfragment.rs

@@ -6,9 +6,9 @@ use dom::bindings::codegen::Bindings::DocumentFragmentBinding;
 use dom::bindings::codegen::Bindings::DocumentFragmentBinding::DocumentFragmentMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::codegen::UnionTypes::NodeOrString;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::{ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::Element;

components/script/dom/documenttype.rs

@@ -5,8 +5,8 @@
 use dom::bindings::codegen::Bindings::DocumentTypeBinding;
 use dom::bindings::codegen::Bindings::DocumentTypeBinding::DocumentTypeMethods;
 use dom::bindings::codegen::UnionTypes::NodeOrString;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::ErrorResult;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::node::Node;

components/script/dom/domimplementation.rs

@@ -7,9 +7,9 @@ use dom::bindings::codegen::Bindings::DOMImplementationBinding;
 use dom::bindings::codegen::Bindings::DOMImplementationBinding::DOMImplementationMethods;
 use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, Root};
 use dom::bindings::utils::validate_qualified_name;
 use dom::bindings::utils::{Reflector, reflect_dom_object};

components/script/dom/element.rs

@@ -21,7 +21,7 @@ use dom::bindings::codegen::Bindings::NamedNodeMapBinding::NamedNodeMapMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
 use dom::bindings::codegen::InheritTypes::{ElementTypeId, HTMLElementTypeId, NodeTypeId};
 use dom::bindings::codegen::UnionTypes::NodeOrString;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, LayoutJS, MutNullableHeap};

components/script/dom/errorevent.rs

@@ -6,7 +6,7 @@ use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::ErrorEventBinding;
 use dom::bindings::codegen::Bindings::ErrorEventBinding::ErrorEventMethods;
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{MutHeapJSVal, Root};

components/script/dom/eventdispatcher.rs

@@ -5,7 +5,7 @@
 use devtools_traits::{StartedTimelineMarker, TimelineMarker, TimelineMarkerType};
 use dom::bindings::callback::ExceptionHandling::Report;
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::{GlobalRoot, global_object_for_reflector};
 use dom::bindings::js::{JS, Root, RootedReference};
 use dom::bindings::trace::RootedVec;

components/script/dom/filereader.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::BlobBinding::BlobMethods;
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::codegen::Bindings::FileReaderBinding::{self, FileReaderConstants, FileReaderMethods};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::{GlobalField, GlobalRef};
 use dom::bindings::js::{JS, MutNullableHeap, Root};

components/script/dom/formdata.rs

@@ -7,7 +7,7 @@ use dom::bindings::codegen::Bindings::FormDataBinding;
 use dom::bindings::codegen::Bindings::FormDataBinding::FormDataMethods;
 use dom::bindings::codegen::UnionTypes::FileOrString;
 use dom::bindings::codegen::UnionTypes::FileOrString::{eFile, eString};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Fallible};
 use dom::bindings::global::{GlobalField, GlobalRef};
 use dom::bindings::js::{JS, Root};

components/script/dom/htmlanchorelement.rs

@@ -10,7 +10,7 @@ use dom::bindings::codegen::Bindings::HTMLAnchorElementBinding;
 use dom::bindings::codegen::Bindings::HTMLAnchorElementBinding::HTMLAnchorElementMethods;
 use dom::bindings::codegen::Bindings::MouseEventBinding::MouseEventMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutNullableHeap, Root};
 use dom::document::Document;
 use dom::domtokenlist::DOMTokenList;

components/script/dom/htmlappletelement.rs

@@ -5,7 +5,7 @@
 use dom::attr::AttrValue;
 use dom::bindings::codegen::Bindings::HTMLAppletElementBinding;
 use dom::bindings::codegen::Bindings::HTMLAppletElementBinding::HTMLAppletElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::htmlelement::HTMLElement;

components/script/dom/htmlareaelement.rs

@@ -5,7 +5,7 @@
 use dom::attr::AttrValue;
 use dom::bindings::codegen::Bindings::HTMLAreaElementBinding;
 use dom::bindings::codegen::Bindings::HTMLAreaElementBinding::HTMLAreaElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutNullableHeap, Root};
 use dom::bindings::utils::Reflectable;
 use dom::document::Document;

components/script/dom/htmlbaseelement.rs

@@ -4,7 +4,7 @@
 
 use dom::attr::Attr;
 use dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element};

components/script/dom/htmlbodyelement.rs

@@ -8,7 +8,7 @@ use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::codegen::Bindings::HTMLBodyElementBinding::{self, HTMLBodyElementMethods};
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::utils::Reflectable;
 use dom::document::Document;

components/script/dom/htmlbuttonelement.rs

@@ -6,7 +6,7 @@ use dom::activation::Activatable;
 use dom::attr::Attr;
 use dom::bindings::codegen::Bindings::HTMLButtonElementBinding;
 use dom::bindings::codegen::Bindings::HTMLButtonElementBinding::HTMLButtonElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, IN_ENABLED_STATE};

components/script/dom/htmlcanvaselement.rs

@@ -10,8 +10,7 @@ use dom::bindings::codegen::Bindings::HTMLCanvasElementBinding;
 use dom::bindings::codegen::Bindings::HTMLCanvasElementBinding::HTMLCanvasElementMethods;
 use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLContextAttributes;
 use dom::bindings::codegen::UnionTypes::CanvasRenderingContext2DOrWebGLRenderingContext;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
-use dom::bindings::error::{Error, Fallible};
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{HeapGCValue, JS, LayoutJS, Root};
 use dom::bindings::num::Finite;

components/script/dom/htmlcollection.rs

@@ -4,7 +4,7 @@
 
 use dom::bindings::codegen::Bindings::HTMLCollectionBinding;
 use dom::bindings::codegen::Bindings::HTMLCollectionBinding::HTMLCollectionMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, Root};
 use dom::bindings::trace::JSTraceable;

components/script/dom/htmldatalistelement.rs

@@ -4,7 +4,7 @@
 
 use dom::bindings::codegen::Bindings::HTMLDataListElementBinding;
 use dom::bindings::codegen::Bindings::HTMLDataListElementBinding::HTMLDataListElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::Element;

components/script/dom/htmlelement.rs

@@ -10,7 +10,7 @@ use dom::bindings::codegen::Bindings::HTMLElementBinding::HTMLElementMethods;
 use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::codegen::InheritTypes::{ElementTypeId, HTMLElementTypeId, NodeTypeId};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult};
 use dom::bindings::js::{JS, MutNullableHeap, Root};
 use dom::bindings::utils::Reflectable;

components/script/dom/htmlfieldsetelement.rs

@@ -6,7 +6,7 @@ use dom::attr::Attr;
 use dom::bindings::codegen::Bindings::HTMLFieldSetElementBinding;
 use dom::bindings::codegen::Bindings::HTMLFieldSetElementBinding::HTMLFieldSetElementMethods;
 use dom::bindings::codegen::InheritTypes::{ElementTypeId, HTMLElementTypeId, NodeTypeId};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root, RootedReference};
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, IN_ENABLED_STATE};

components/script/dom/htmlfontelement.rs

@@ -7,7 +7,7 @@ use dom::attr::{Attr, AttrValue};
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::HTMLFontElementBinding;
 use dom::bindings::codegen::Bindings::HTMLFontElementBinding::HTMLFontElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, RawLayoutElementHelpers};

components/script/dom/htmlformelement.rs

@@ -10,8 +10,9 @@ use dom::bindings::codegen::Bindings::HTMLFormElementBinding;
 use dom::bindings::codegen::Bindings::HTMLFormElementBinding::HTMLFormElementMethods;
 use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
 use dom::bindings::codegen::InheritTypes::{ElementTypeId, HTMLElementTypeId, NodeTypeId};
-use dom::bindings::conversions::{Castable, DerivedFrom};
+use dom::bindings::conversions::{DerivedFrom};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root};
 use dom::bindings::utils::Reflectable;
 use dom::document::Document;

components/script/dom/htmlheadelement.rs

@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::HTMLHeadElementBinding;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::htmlelement::HTMLElement;

components/script/dom/htmliframeelement.rs

@@ -6,9 +6,10 @@ use dom::attr::{Attr, AttrHelpersForLayout, AttrValue};
 use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding;
 use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding::HTMLIFrameElementMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
-use dom::bindings::conversions::{Castable, ToJSValConvertible};
+use dom::bindings::conversions::{ToJSValConvertible};
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root, LayoutJS};
 use dom::bindings::utils::Reflectable;
 use dom::customevent::CustomEvent;

components/script/dom/htmlimageelement.rs

@@ -8,7 +8,7 @@ use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::HTMLImageElementBinding;
 use dom::bindings::codegen::Bindings::HTMLImageElementBinding::HTMLImageElementMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{LayoutJS, Root};

components/script/dom/htmlinputelement.rs

@@ -11,7 +11,7 @@ use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::HTMLInputElementBinding;
 use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
 use dom::bindings::codegen::Bindings::KeyboardEventBinding::KeyboardEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, LayoutJS, Root, RootedReference};
 use dom::document::Document;

components/script/dom/htmllabelelement.rs

@@ -5,7 +5,7 @@
 use dom::attr::AttrValue;
 use dom::bindings::codegen::Bindings::HTMLLabelElementBinding;
 use dom::bindings::codegen::Bindings::HTMLLabelElementBinding::HTMLLabelElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::Element;

components/script/dom/htmllinkelement.rs

@@ -8,7 +8,7 @@ use dom::attr::{Attr, AttrValue};
 use dom::bindings::codegen::Bindings::HTMLLinkElementBinding;
 use dom::bindings::codegen::Bindings::HTMLLinkElementBinding::HTMLLinkElementMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutNullableHeap, Root};
 use dom::bindings::js::{RootedReference};

components/script/dom/htmlmetaelement.rs

@@ -4,7 +4,7 @@
 
 use dom::bindings::codegen::Bindings::HTMLMetaElementBinding;
 use dom::bindings::codegen::Bindings::HTMLMetaElementBinding::HTMLMetaElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root, RootedReference};
 use dom::document::Document;
 use dom::element::Element;

components/script/dom/htmlobjectelement.rs

@@ -6,7 +6,7 @@ use dom::attr::Attr;
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::HTMLObjectElementBinding;
 use dom::bindings::codegen::Bindings::HTMLObjectElementBinding::HTMLObjectElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element};

components/script/dom/htmloptgroupelement.rs

@@ -5,7 +5,7 @@
 use dom::attr::Attr;
 use dom::bindings::codegen::Bindings::HTMLOptGroupElementBinding;
 use dom::bindings::codegen::Bindings::HTMLOptGroupElementBinding::HTMLOptGroupElementMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, IN_ENABLED_STATE};

components/script/dom/htmloptionelement.rs

@@ -7,7 +7,7 @@ use dom::bindings::codegen::Bindings::CharacterDataBinding::CharacterDataMethods
 use dom::bindings::codegen::Bindings::HTMLOptionElementBinding;
 use dom::bindings::codegen::Bindings::HTMLOptionElementBinding::HTMLOptionElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::characterdata::CharacterData;
 use dom::document::Document;

components/script/dom/htmlscriptelement.rs

@@ -10,7 +10,7 @@ use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::HTMLScriptElementBinding;
 use dom::bindings::codegen::Bindings::HTMLScriptElementBinding::HTMLScriptElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::RootedReference;
 use dom::bindings::js::{JS, Root};

components/script/dom/htmlselectelement.rs

@@ -8,7 +8,7 @@ use dom::bindings::codegen::Bindings::HTMLSelectElementBinding;
 use dom::bindings::codegen::Bindings::HTMLSelectElementBinding::HTMLSelectElementMethods;
 use dom::bindings::codegen::UnionTypes::HTMLElementOrLong;
 use dom::bindings::codegen::UnionTypes::HTMLOptionElementOrHTMLOptGroupElement;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element, IN_ENABLED_STATE};

components/script/dom/htmlstyleelement.rs

@@ -5,7 +5,7 @@
 use cssparser::Parser as CssParser;
 use dom::bindings::codegen::Bindings::HTMLStyleElementBinding;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::document::Document;
 use dom::element::Element;

components/script/dom/htmltablecellelement.rs

@@ -6,7 +6,7 @@ use cssparser::RGBA;
 use dom::attr::{Attr, AttrValue};
 use dom::bindings::codegen::Bindings::HTMLTableCellElementBinding::HTMLTableCellElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::LayoutJS;
 use dom::document::Document;
 use dom::element::AttributeMutation;

components/script/dom/htmltableelement.rs

@@ -7,7 +7,7 @@ use dom::attr::{Attr, AttrValue};
 use dom::bindings::codegen::Bindings::HTMLTableElementBinding;
 use dom::bindings::codegen::Bindings::HTMLTableElementBinding::HTMLTableElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{Root, RootedReference};
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element};

components/script/dom/htmltablerowelement.rs

@@ -6,7 +6,7 @@ use cssparser::RGBA;
 use dom::attr::Attr;
 use dom::bindings::codegen::Bindings::HTMLTableRowElementBinding::{self, HTMLTableRowElementMethods};
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{ErrorResult, Fallible};
 use dom::bindings::js::{JS, MutNullableHeap, Root, RootedReference};
 use dom::document::Document;

components/script/dom/htmltablesectionelement.rs

@@ -6,7 +6,7 @@ use cssparser::RGBA;
 use dom::attr::Attr;
 use dom::bindings::codegen::Bindings::HTMLTableSectionElementBinding::{self, HTMLTableSectionElementMethods};
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{ErrorResult, Fallible};
 use dom::bindings::js::{Root, RootedReference};
 use dom::document::Document;

components/script/dom/htmltemplateelement.rs

@@ -6,7 +6,7 @@ use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::HTMLTemplateElementBinding;
 use dom::bindings::codegen::Bindings::HTMLTemplateElementBinding::HTMLTemplateElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutNullableHeap, Root};
 use dom::document::Document;
 use dom::documentfragment::DocumentFragment;

components/script/dom/htmltextareaelement.rs

@@ -8,7 +8,7 @@ use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding;
 use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding::HTMLTextAreaElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{LayoutJS, Root};
 use dom::bindings::refcounted::Trusted;

components/script/dom/htmltitleelement.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::HTMLTitleElementBinding;
 use dom::bindings::codegen::Bindings::HTMLTitleElementBinding::HTMLTitleElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::characterdata::CharacterData;
 use dom::document::Document;

components/script/dom/keyboardevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::KeyboardEventBinding;
 use dom::bindings::codegen::Bindings::KeyboardEventBinding::{KeyboardEventConstants, KeyboardEventMethods};
 use dom::bindings::codegen::Bindings::UIEventBinding::UIEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{Root, RootedReference};

components/script/dom/macros.rs

@@ -6,7 +6,7 @@
 macro_rules! make_getter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self) -> DOMString {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -22,7 +22,7 @@ macro_rules! make_getter(
 macro_rules! make_bool_getter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self) -> bool {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -39,7 +39,7 @@ macro_rules! make_bool_getter(
 macro_rules! make_uint_getter(
     ($attr:ident, $htmlname:expr, $default:expr) => (
         fn $attr(&self) -> u32 {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -59,7 +59,7 @@ macro_rules! make_uint_getter(
 macro_rules! make_url_getter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self) -> DOMString {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -77,7 +77,7 @@ macro_rules! make_url_getter(
 macro_rules! make_url_or_base_getter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self) -> DOMString {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -99,7 +99,7 @@ macro_rules! make_url_or_base_getter(
 macro_rules! make_enumerated_getter(
     ( $attr:ident, $htmlname:expr, $default:expr, $(($choices: pat))|+) => (
         fn $attr(&self) -> DOMString {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use std::ascii::AsciiExt;
             use std::borrow::ToOwned;
@@ -125,7 +125,7 @@ macro_rules! make_enumerated_getter(
 macro_rules! make_setter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self, value: DOMString) {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -139,7 +139,7 @@ macro_rules! make_setter(
 macro_rules! make_bool_setter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self, value: bool) {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -153,7 +153,7 @@ macro_rules! make_bool_setter(
 macro_rules! make_uint_setter(
     ($attr:ident, $htmlname:expr, $default:expr) => (
         fn $attr(&self, value: u32) {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use dom::values::UNSIGNED_LONG_MAX;
             use string_cache::Atom;
@@ -176,7 +176,7 @@ macro_rules! make_uint_setter(
 macro_rules! make_limited_uint_setter(
     ($attr:ident, $htmlname:expr, $default:expr) => (
         fn $attr(&self, value: u32) -> $crate::dom::bindings::error::ErrorResult {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use dom::values::UNSIGNED_LONG_MAX;
             use string_cache::Atom;
@@ -205,7 +205,7 @@ macro_rules! make_limited_uint_setter(
 macro_rules! make_atomic_setter(
     ( $attr:ident, $htmlname:expr ) => (
         fn $attr(&self, value: DOMString) {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::element::Element;
             use string_cache::Atom;
             let element = self.upcast::<Element>();
@@ -250,14 +250,14 @@ macro_rules! no_jsmanaged_fields(
 macro_rules! define_event_handler(
     ($handler: ident, $event_type: ident, $getter: ident, $setter: ident) => (
         fn $getter(&self) -> Option<::std::rc::Rc<$handler>> {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::eventtarget::EventTarget;
             let eventtarget = self.upcast::<EventTarget>();
             eventtarget.get_event_handler_common(stringify!($event_type))
         }
 
         fn $setter(&self, listener: Option<::std::rc::Rc<$handler>>) {
-            use dom::bindings::conversions::Castable;
+            use dom::bindings::inheritance::Castable;
             use dom::eventtarget::EventTarget;
             let eventtarget = self.upcast::<EventTarget>();
             eventtarget.set_event_handler_common(stringify!($event_type), listener)

components/script/dom/messageevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::MessageEventBinding;
 use dom::bindings::codegen::Bindings::MessageEventBinding::MessageEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::Root;

components/script/dom/mod.rs

@@ -60,7 +60,7 @@
 //! and check whether a given instance is of a given type.
 //!
 //! ```ignore
-//! use dom::bindings::conversions::Castable;
+//! use dom::bindings::inheritance::Castable;
 //! use dom::element::Element;
 //! use dom::htmlelement::HTMLElement;
 //! use dom::htmlinputelement::HTMLInputElement;

components/script/dom/mouseevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::MouseEventBinding;
 use dom::bindings::codegen::Bindings::MouseEventBinding::MouseEventMethods;
 use dom::bindings::codegen::Bindings::UIEventBinding::UIEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutNullableHeap, Root, RootedReference};

components/script/dom/node.rs

@@ -22,9 +22,10 @@ use dom::bindings::codegen::Bindings::ProcessingInstructionBinding::ProcessingIn
 use dom::bindings::codegen::InheritTypes::{CharacterDataTypeId, ElementTypeId, EventTargetTypeId};
 use dom::bindings::codegen::InheritTypes::{HTMLElementTypeId, NodeTypeId};
 use dom::bindings::codegen::UnionTypes::NodeOrString;
-use dom::bindings::conversions::{self, Castable, DerivedFrom};
+use dom::bindings::conversions::{self, DerivedFrom};
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::js::RootedReference;
 use dom::bindings::js::{JS, LayoutJS, MutNullableHeap};

components/script/dom/progressevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::ProgressEventBinding;
 use dom::bindings::codegen::Bindings::ProgressEventBinding::ProgressEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::Root;

components/script/dom/range.rs

@@ -11,7 +11,7 @@ use dom::bindings::codegen::Bindings::RangeBinding::{self, RangeConstants};
 use dom::bindings::codegen::Bindings::TextBinding::TextMethods;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::codegen::InheritTypes::{CharacterDataTypeId, NodeTypeId};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutHeap, Root, RootedReference};

components/script/dom/storage.rs

@@ -4,7 +4,7 @@
 
 use dom::bindings::codegen::Bindings::StorageBinding;
 use dom::bindings::codegen::Bindings::StorageBinding::StorageMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult};
 use dom::bindings::global::{GlobalField, GlobalRef};
 use dom::bindings::js::{Root, RootedReference};

components/script/dom/storageevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::EventBinding::{EventMethods};
 use dom::bindings::codegen::Bindings::StorageEventBinding;
 use dom::bindings::codegen::Bindings::StorageEventBinding::{StorageEventMethods};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutNullableHeap, Root, RootedReference};

components/script/dom/text.rs

@@ -7,7 +7,7 @@ use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
 use dom::bindings::codegen::Bindings::TextBinding::{self, TextMethods};
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, Fallible};
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::Root;

components/script/dom/touchevent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::TouchEventBinding;
 use dom::bindings::codegen::Bindings::TouchEventBinding::TouchEventMethods;
 use dom::bindings::codegen::Bindings::UIEventBinding::UIEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutHeap, Root};
 use dom::bindings::utils::reflect_dom_object;

components/script/dom/uievent.rs

@@ -5,7 +5,7 @@
 use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::UIEventBinding;
 use dom::bindings::codegen::Bindings::UIEventBinding::UIEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::Root;

components/script/dom/userscripts.rs

@@ -4,7 +4,7 @@
 
 use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{RootedReference};
 use dom::htmlheadelement::HTMLHeadElement;
 use dom::node::Node;

components/script/dom/virtualmethods.rs

@@ -6,7 +6,7 @@ use dom::attr::{Attr, AttrValue};
 use dom::bindings::codegen::InheritTypes::ElementTypeId;
 use dom::bindings::codegen::InheritTypes::HTMLElementTypeId;
 use dom::bindings::codegen::InheritTypes::NodeTypeId;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element};
 use dom::event::Event;

components/script/dom/webglcontextevent.rs

@@ -6,7 +6,7 @@ use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
 use dom::bindings::codegen::Bindings::WebGLContextEventBinding;
 use dom::bindings::codegen::Bindings::WebGLContextEventBinding::WebGLContextEventInit;
 use dom::bindings::codegen::Bindings::WebGLContextEventBinding::WebGLContextEventMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::Root;

components/script/dom/webglrenderingcontext.rs

@@ -9,8 +9,9 @@ use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderi
 use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::{WebGLRenderingContextMethods};
 use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::{self, WebGLContextAttributes};
 use dom::bindings::codegen::UnionTypes::ImageDataOrHTMLImageElementOrHTMLCanvasElementOrHTMLVideoElement;
-use dom::bindings::conversions::{Castable, ToJSValConvertible};
+use dom::bindings::conversions::{ToJSValConvertible};
 use dom::bindings::global::{GlobalField, GlobalRef};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, LayoutJS, MutNullableHeap, Root};
 use dom::bindings::utils::{Reflector, reflect_dom_object};
 use dom::event::{Event, EventBubbles, EventCancelable};

components/script/dom/websocket.rs

@@ -6,9 +6,10 @@ use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::codegen::Bindings::WebSocketBinding;
 use dom::bindings::codegen::Bindings::WebSocketBinding::{BinaryType, WebSocketMethods};
-use dom::bindings::conversions::{Castable, ToJSValConvertible};
+use dom::bindings::conversions::{ToJSValConvertible};
 use dom::bindings::error::{Error, Fallible};
 use dom::bindings::global::{GlobalField, GlobalRef};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::refcounted::Trusted;
 use dom::bindings::str::USVString;

components/script/dom/window.rs

@@ -11,7 +11,7 @@ use dom::bindings::codegen::Bindings::EventHandlerBinding::{EventHandlerNonNull,
 use dom::bindings::codegen::Bindings::FunctionBinding::Function;
 use dom::bindings::codegen::Bindings::WindowBinding::{ScrollBehavior, ScrollToOptions};
 use dom::bindings::codegen::Bindings::WindowBinding::{self, FrameRequestCallback, WindowMethods};
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, Fallible, report_pending_exception};
 use dom::bindings::global::GlobalRef;
 use dom::bindings::global::global_object_for_js_object;

components/script/dom/worker.rs

@@ -6,7 +6,7 @@ use devtools_traits::{DevtoolsPageInfo, ScriptToDevtoolsControlMsg};
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::codegen::Bindings::WorkerBinding;
 use dom::bindings::codegen::Bindings::WorkerBinding::WorkerMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::{GlobalField, GlobalRef};
 use dom::bindings::js::Root;

components/script/dom/workerglobalscope.rs

@@ -5,7 +5,7 @@
 use devtools_traits::{DevtoolScriptControlMsg, ScriptToDevtoolsControlMsg};
 use dom::bindings::codegen::Bindings::FunctionBinding::Function;
 use dom::bindings::codegen::Bindings::WorkerGlobalScopeBinding::WorkerGlobalScopeMethods;
-use dom::bindings::conversions::Castable;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::error::{Error, ErrorResult, Fallible, report_pending_exception};
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JS, MutNullableHeap, Root};

components/script/dom/xmlhttprequest.rs

@@ -12,9 +12,10 @@ use dom::bindings::codegen::Bindings::XMLHttpRequestBinding::XMLHttpRequestRespo
 use dom::bindings::codegen::Bindings::XMLHttpRequestBinding::XMLHttpRequestResponseType::{Json, Text, _empty};
 use dom::bindings::codegen::UnionTypes::StringOrURLSearchParams;
 use dom::bindings::codegen::UnionTypes::StringOrURLSearchParams::{eString, eURLSearchParams};
-use dom::bindings::conversions::{Castable, ToJSValConvertible};
+use dom::bindings::conversions::{ToJSValConvertible};
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::global::{GlobalField, GlobalRef, GlobalRoot};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::js::{JS, MutNullableHeap};
 use dom::bindings::refcounted::Trusted;

components/script/script_task.rs

@@ -23,8 +23,9 @@ use devtools_traits::{DevtoolScriptControlMsg, DevtoolsPageInfo};
 use document_loader::{DocumentLoader, LoadType};
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::DocumentBinding::{DocumentMethods, DocumentReadyState};
-use dom::bindings::conversions::{Castable, FromJSValConvertible, StringificationBehavior};
+use dom::bindings::conversions::{FromJSValConvertible, StringificationBehavior};
 use dom::bindings::global::GlobalRef;
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, RootCollection, trace_roots};
 use dom::bindings::js::{Root, RootCollectionPtr, RootedReference};
 use dom::bindings::refcounted::{LiveDOMReferences, Trusted, TrustedReference, trace_refcounted_objects};

components/script/webdriver_handlers.rs

@@ -7,7 +7,8 @@ use dom::bindings::codegen::Bindings::ElementBinding::ElementMethods;
 use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding::HTMLIFrameElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
 use dom::bindings::codegen::Bindings::NodeListBinding::NodeListMethods;
-use dom::bindings::conversions::{Castable, FromJSValConvertible, StringificationBehavior};
+use dom::bindings::conversions::{FromJSValConvertible, StringificationBehavior};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::element::Element;
 use dom::htmliframeelement::HTMLIFrameElement;