Oilpan: move ImageBitmap to the oilpan heap.

Source/core/loader/ImageLoader.h

Index: Source/core/loader/ImageLoader.h
diff --git a/Source/core/loader/ImageLoader.h b/Source/core/loader/ImageLoader.h
index ad0deb677452442c09fb8c2f6e9af4b712971c06..77546965a0d53a3ef003625489a64068d5f79d70 100644
--- a/Source/core/loader/ImageLoader.h
+++ b/Source/core/loader/ImageLoader.h
@@ -26,18 +26,23 @@
 #include "core/fetch/ImageResource.h"
 #include "core/fetch/ImageResourceClient.h"
 #include "core/fetch/ResourcePtr.h"
+#include "heap/Handle.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/AtomicString.h"
 
 namespace WebCore {
 
-class ImageLoaderClient {
+class ImageLoaderClient : public WillBeGarbageCollectedMixin {
 public:
     virtual void notifyImageSourceChanged() = 0;
 
     // Determines whether the observed ImageResource should have higher priority in the decoded resources cache.
     virtual bool requestsHighLiveResourceCachePriority() { return false; }
 
+#if ENABLE(OILPAN)

[haraken, 2014/03/10 15:25:03]

Would it be possible to avoid adding this flag?

[sof, 2014/03/10 21:07:21]

Certainly; removed.

+    virtual void trace(Visitor*) = 0;
+#endif
+
 protected:
     ImageLoaderClient() { }
 };
@@ -108,7 +113,7 @@ private:
 
     Element* m_element;
     ResourcePtr<ImageResource> m_image;
-    HashSet<ImageLoaderClient*> m_clients;
+    WillBePersistentHeapHashSet<RawPtrWillBeMember<ImageLoaderClient> > m_clients;
     Timer<ImageLoader> m_derefElementTimer;
     AtomicString m_failedLoadURL;
     bool m_hasPendingBeforeLoadEvent : 1;