Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/modules/imagebitmap/ImageBitmapFactories.cpp

Index: Source/modules/imagebitmap/ImageBitmapFactories.cpp
diff --git a/Source/modules/imagebitmap/ImageBitmapFactories.cpp b/Source/modules/imagebitmap/ImageBitmapFactories.cpp
index eae94095b4a11d2a4ac9e33c00446941b17c99ac..81630a233c28e022a746ba6375ab1a69ca193cad 100644
--- a/Source/modules/imagebitmap/ImageBitmapFactories.cpp
+++ b/Source/modules/imagebitmap/ImageBitmapFactories.cpp
@@ -270,16 +270,15 @@ ImageBitmapFactories& ImageBitmapFactories::from(EventTarget& eventTarget)
         return fromInternal(*window);
 
     ASSERT(eventTarget.executionContext()->isWorkerGlobalScope());
-    return fromInternal(*toWorkerGlobalScope(eventTarget.executionContext()));
+    return WorkerGlobalScopeImageBitmapFactories::fromInternal(*toWorkerGlobalScope(eventTarget.executionContext()));
 }
 
-template <class T>
-ImageBitmapFactories& ImageBitmapFactories::fromInternal(T& object)
+ImageBitmapFactories& ImageBitmapFactories::fromInternal(DOMWindow& object)
 {
-    ImageBitmapFactories* supplement = static_cast<ImageBitmapFactories*>(Supplement<T>::from(object, supplementName()));
+    ImageBitmapFactories* supplement = static_cast<ImageBitmapFactories*>(Supplement<DOMWindow>::from(object, supplementName()));
     if (!supplement) {
         supplement = new ImageBitmapFactories();
-        Supplement<T>::provideTo(object, supplementName(), adoptPtr(supplement));
+        Supplement<DOMWindow>::provideTo(object, supplementName(), adoptPtr(supplement));
     }
     return *supplement;
 }
@@ -354,4 +353,18 @@ void ImageBitmapFactories::ImageBitmapLoader::didFail(FileError::ErrorCode)
     rejectPromise();
 }
 
+ImageBitmapFactories& WorkerGlobalScopeImageBitmapFactories::fromInternal(WorkerGlobalScope& object)
+{
+    WorkerGlobalScopeImageBitmapFactories* supplement = static_cast<WorkerGlobalScopeImageBitmapFactories*>(WillBeHeapSupplement<WorkerGlobalScope>::from(object, ImageBitmapFactories::supplementName()));
+    if (!supplement) {
+        supplement = new WorkerGlobalScopeImageBitmapFactories();
+        WillBeHeapSupplement<WorkerGlobalScope>::provideTo(object, ImageBitmapFactories::supplementName(), adoptPtrWillBeNoop(supplement));
+    }
+    return *supplement;
+}
+
+void WorkerGlobalScopeImageBitmapFactories::trace(Visitor*)
+{
+}
+
 } // namespace WebCore