Instate a pre-wrap hook that outerizes its argument, to satisfy an undocumented JSAPI requirement.

src/components/script/dom/bindings/utils.rs

@@ -610,6 +610,25 @@ pub extern fn wrap_for_same_compartment(cx: *JSContext, obj: *JSObject) -> *JSOb
     }
 }
 
+pub extern fn pre_wrap(cx: *mut JSContext, _scope: *mut JSObject,
+                       obj: *mut JSObject, flags: c_uint) -> *mut JSObject {
+    unsafe {
+        let clasp = JS_GetClass(obj as *_);
+        let clasp = clasp as *js::Class;
+        match (*clasp).ext.outerObject {
+            Some(outerize) => {
+                debug!("found an outerize hook");
+                let obj = JSHandleObject { unnamed: &(obj as *_) };
+                outerize(cx as *_, obj) as *mut _
+            }
+            None => {
+                debug!("no outerize hook found");
+                obj
+            }
+        }
+    }
+}
+
 pub extern fn outerize_global(_cx: *JSContext, obj: JSHandleObject) -> *JSObject {
     unsafe {
         debug!("outerizing");

src/components/script/script_task.rs

@@ -11,7 +11,8 @@ use dom::bindings::codegen::InheritTypes::{EventTargetCast, NodeCast, ElementCas
 use dom::bindings::js::{JS, JSRef, RootCollection, Temporary, OptionalSettable};
 use dom::bindings::js::OptionalRootable;
 use dom::bindings::trace::{Traceable, Untraceable};
-use dom::bindings::utils::{Reflectable, GlobalStaticData, wrap_for_same_compartment};
+use dom::bindings::utils::{Reflectable, GlobalStaticData};
+use dom::bindings::utils::{wrap_for_same_compartment, pre_wrap};
 use dom::document::{Document, HTMLDocument, DocumentMethods, DocumentHelpers};
 use dom::element::{Element, AttributeHandlers};
 use dom::event::{Event_, ResizeEvent, ReflowEvent, ClickEvent, MouseDownEvent, MouseMoveEvent, MouseUpEvent};
@@ -647,11 +648,11 @@ impl ScriptTask {
             let callback = JS_SetWrapObjectCallbacks((*js_runtime).ptr,
                                                      ptr::null(),
                                                      wrap_for_same_compartment,
-                                                     ptr::null());
+                                                     None);
             JS_SetWrapObjectCallbacks((*js_runtime).ptr,
                                       callback,
                                       wrap_for_same_compartment,
-                                      ptr::null());
+                                      Some(pre_wrap));
         }
 
         let js_context = js_runtime.cx();

src/support/spidermonkey/rust-mozjs

@@ -1 +1 @@
-Subproject commit 07acb44df9b3f638743931f392c0ebe7040a7bab
+Subproject commit 07f19496bd7703b502812a6b4228f08dec59ec0b