diff --git a/components/script/dom/bindings/js.rs b/components/script/dom/bindings/js.rs
index b798d6c1e27..4f953d6bb61 100644
--- a/components/script/dom/bindings/js.rs
+++ b/components/script/dom/bindings/js.rs
@@ -174,10 +174,6 @@ impl<T: Reflectable> Temporary<T> {
     pub fn from_rooted<'a>(root: JSRef<'a, T>) -> Temporary<T> {
         Temporary::new(JS::from_rooted(root))
     }
-
-    unsafe fn inner(&self) -> JS<T> {
-        self.inner.clone()
-    }
 }
 
 impl<T: Reflectable> Rootable<T> for Temporary<T> {
@@ -406,7 +402,7 @@ impl<T: Reflectable> JS<T> {
     /// are reachable in the GC graph, so this unrooted value becomes
     /// transitively rooted for the lifetime of its new owner.
     pub fn assign(&mut self, val: Temporary<T>) {
-        *self = unsafe { val.inner() };
+        *self = val.inner.clone();
     }
 }
 
@@ -461,13 +457,15 @@ impl<T> Assignable<T> for JS<T> {
 
 impl<'a, T: Reflectable> Assignable<T> for JSRef<'a, T> {
     unsafe fn get_js(&self) -> JS<T> {
-        self.unrooted()
+        JS {
+            ptr: self.ptr
+        }
     }
 }
 
 impl<T: Reflectable> Assignable<T> for Temporary<T> {
     unsafe fn get_js(&self) -> JS<T> {
-        self.inner()
+        self.inner.clone()
     }
 }
 
@@ -484,18 +482,6 @@ impl<T: Reflectable, U: Rootable<T>> OptionalRootable<T> for Option<U> {
     }
 }
 
-/// Return an unrooted type for storing in optional DOM fields
-pub trait OptionalUnrootable<T> {
-    /// Returns a `JS<T>` for the inner value, if it exists.
-    fn unrooted(&self) -> Option<JS<T>>;
-}
-
-impl<'a, T: Reflectable> OptionalUnrootable<T> for Option<JSRef<'a, T>> {
-    fn unrooted(&self) -> Option<JS<T>> {
-        self.as_ref().map(|inner| JS::from_rooted(*inner))
-    }
-}
-
 /// Root a rootable `Option<Option>` type (used for `Option<Option<JS<T>>>`)
 pub trait OptionalOptionalRootable<T> {
     /// Root the inner value, if it exists.
@@ -692,15 +678,6 @@ impl<'a, 'b, T> PartialEq<JSRef<'b, T>> for JSRef<'a, T> {
     }
 }
 
-impl<'a,T> JSRef<'a,T> {
-    /// Return an unrooted `JS<T>` for the inner pointer.
-    pub fn unrooted(&self) -> JS<T> {
-        JS {
-            ptr: self.ptr
-        }
-    }
-}
-
 impl<'a, T: Reflectable> JSRef<'a, T> {
     /// Returns the inner pointer directly.
     pub fn extended_deref(self) -> &'a T {
diff --git a/components/script/dom/document.rs b/components/script/dom/document.rs
index 1749177d22b..19b5c74af0e 100644
--- a/components/script/dom/document.rs
+++ b/components/script/dom/document.rs
@@ -341,7 +341,7 @@ impl<'a> DocumentHelpers<'a> for JSRef<'a, Document> {
 
         match idmap.entry(id) {
             Vacant(entry) => {
-                entry.insert(vec!(element.unrooted()));
+                entry.insert(vec![JS::from_rooted(element)]);
             }
             Occupied(entry) => {
                 let elements = entry.into_mut();
@@ -889,7 +889,7 @@ impl<'a> PrivateDocumentHelpers for JSRef<'a, Document> {
             for node in NodeCast::from_ref(root.r()).traverse_preorder() {
                 let node = node.root();
                 if callback(node.r()) {
-                    nodes.push(node.r().unrooted());
+                    nodes.push(JS::from_rooted(node.r()));
                 }
             }
         };
diff --git a/components/script/dom/htmlcanvaselement.rs b/components/script/dom/htmlcanvaselement.rs
index b9f2ba1cd7a..f4ce2ecfc13 100644
--- a/components/script/dom/htmlcanvaselement.rs
+++ b/components/script/dom/htmlcanvaselement.rs
@@ -129,7 +129,7 @@ impl<'a> HTMLCanvasElementHelpers for JSRef<'a, HTMLCanvasElement> {
         let context = self.GetContext(String::from_str("2d"));
         match context.unwrap() {
             CanvasRenderingContext2DOrWebGLRenderingContext::eCanvasRenderingContext2D(context) => {
-              Temporary::new(context.root().r().unrooted())
+              Temporary::from_unrooted(context)
             }
             _ => panic!("Wrong Context Type: Expected 2d context"),
         }
@@ -139,8 +139,8 @@ impl<'a> HTMLCanvasElementHelpers for JSRef<'a, HTMLCanvasElement> {
         let context = self.GetContext(String::from_str("webgl"));
         match context.unwrap() {
             CanvasRenderingContext2DOrWebGLRenderingContext::eWebGLRenderingContext(context) => {
-              return Temporary::new(context.root().r().unrooted());
-            }
+              Temporary::from_unrooted(context)
+            },
             _ => panic!("Wrong Context Type: Expected webgl context"),
         }
     }