Allow eviction of ImageBitmaps that are created from ImageElements.

Source/core/page/ImageBitmap.h

Index: Source/core/page/ImageBitmap.h
diff --git a/Source/core/page/ImageBitmap.h b/Source/core/page/ImageBitmap.h
index 8b8c01c740152758474622c112de18a4dcdc193b..39cdbfd6f603552a41955db122d51429310c8f62 100644
--- a/Source/core/page/ImageBitmap.h
+++ b/Source/core/page/ImageBitmap.h
@@ -6,8 +6,7 @@
 #define ImageBitmap_h
 
 #include "bindings/v8/ScriptWrappable.h"
-#include "core/dom/ScriptExecutionContext.h"
-#include "core/platform/graphics/BitmapImage.h"
+#include "core/loader/cache/CachedImage.h"
 #include "core/platform/graphics/ImageBuffer.h"
 #include "core/platform/graphics/IntRect.h"
 #include "wtf/PassRefPtr.h"
@@ -19,42 +18,42 @@ class HTMLCanvasElement;
 class HTMLImageElement;
 class HTMLVideoElement;
 class ImageData;
-class ImageBitmapCallback;
 
 class ImageBitmap : public RefCounted<ImageBitmap>, public ScriptWrappable {
 
 public:
-    static PassRefPtr<ImageBitmap> create(HTMLImageElement*, IntRect);
-    static PassRefPtr<ImageBitmap> create(HTMLVideoElement*, IntRect);
-    static PassRefPtr<ImageBitmap> create(HTMLCanvasElement*, IntRect);
-    static PassRefPtr<ImageBitmap> create(ImageData*, IntRect);
-    static PassRefPtr<ImageBitmap> create(ImageBitmap*, IntRect);
+    static PassRefPtr<ImageBitmap> create(HTMLImageElement*, const IntRect&);
+    static PassRefPtr<ImageBitmap> create(HTMLVideoElement*, const IntRect&);
+    static PassRefPtr<ImageBitmap> create(HTMLCanvasElement*, const IntRect&);
+    static PassRefPtr<ImageBitmap> create(ImageData*, const IntRect&);
+    static PassRefPtr<ImageBitmap> create(ImageBitmap*, const IntRect&);
 
-    BitmapImage* bitmapImage() const { return m_bitmap.get(); }
+    Image* bitmapImage() const { return m_bitmap->image(); }
+
+    int bitmapWidth() const { return m_bitmap->image()->width(); }
+    int bitmapHeight() const { return m_bitmap->image()->height(); }
+    IntSize bitmapSize() const { return m_bitmap->image()->size(); }
 
-    int bitmapWidth() const { return m_bitmap->width(); }
-    int bitmapHeight() const { return m_bitmap->height(); }
-    IntSize bitmapSize() const { return m_bitmap->size(); }
     IntPoint bitmapOffset() const { return m_bitmapOffset; }
 
-    int width() const { return m_size.width(); }
-    int height() const { return m_size.height(); }
-    IntSize size() const { return m_size; }
+    int width() const { return m_cropRect.width(); }
+    int height() const { return m_cropRect.height(); }
+    IntSize size() const { return m_cropRect.size(); }
 
     ~ImageBitmap() { };
 
 private:
-    ImageBitmap(HTMLImageElement*, IntRect);
-    ImageBitmap(HTMLVideoElement*, IntRect);
-    ImageBitmap(HTMLCanvasElement*, IntRect);
-    ImageBitmap(ImageData*, IntRect);
-    ImageBitmap(ImageBitmap*, IntRect);
+    ImageBitmap(HTMLImageElement*, const IntRect&);
+    ImageBitmap(HTMLVideoElement*, const IntRect&);
+    ImageBitmap(HTMLCanvasElement*, const IntRect&);
+    ImageBitmap(ImageData*, const IntRect&);
+    ImageBitmap(ImageBitmap*, const IntRect&);
 
-    RefPtr<BitmapImage> m_bitmap;
+    CachedImage* m_bitmap;
     OwnPtr<ImageBuffer> m_buffer;
 
     IntPoint m_bitmapOffset; // offset applied to the image when it is drawn to the context
-    IntSize m_size; // user defined size of the ImageBitmap
+    IntRect m_cropRect;
 };
 
 } // namespace WebCore