Blob creation methods for ImageBitmap.

Source/core/page/DOMWindow.h

Index: Source/core/page/DOMWindow.h
diff --git a/Source/core/page/DOMWindow.h b/Source/core/page/DOMWindow.h
index ae98cf0a1fb716d1597a64c4e27225ece329b7b7..f65caa5ce141dff05ea6075f0675b25d991a5bb6 100644
--- a/Source/core/page/DOMWindow.h
+++ b/Source/core/page/DOMWindow.h
@@ -30,6 +30,7 @@
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/EventTarget.h"
 #include "core/page/FrameDestructionObserver.h"
+#include "core/page/ImageBitmapFactories.h"
 #include "core/platform/Supplementable.h"
 
 #include "wtf/Forward.h"
@@ -79,7 +80,7 @@ namespace WebCore {
 
     enum SetLocationLocking { LockHistoryBasedOnGestureState, LockHistoryAndBackForwardList };
 
-    class DOMWindow : public RefCounted<DOMWindow>, public ScriptWrappable, public EventTarget, public FrameDestructionObserver, public Supplementable<DOMWindow> {
+    class DOMWindow : public RefCounted<DOMWindow>, public ScriptWrappable, public EventTarget, public FrameDestructionObserver, public ImageBitmapFactories, public Supplementable<DOMWindow> {

[do-not-use, 2013/08/12 15:02:19]

Why do we need to subclass ImageBitmapFactories?

ImageBitmapFactories is a partial interface (using implements statement) so we
should not need to have Window inherit ImageBitmapFactories.

ImageBitmapFactories static functions should already take the DOMWindow in
argument.

     public:
         static PassRefPtr<DOMWindow> create(Frame* frame) { return adoptRef(new DOMWindow(frame)); }
         virtual ~DOMWindow();