Reland of: Make Imagebitmap Transferable

third_party/WebKit/Source/core/frame/ImageBitmap.h

Index: third_party/WebKit/Source/core/frame/ImageBitmap.h
diff --git a/third_party/WebKit/Source/core/frame/ImageBitmap.h b/third_party/WebKit/Source/core/frame/ImageBitmap.h
index 71fd4a52f3b7c348eb5679ca5c961ad580afda69..8ae958f71726a5d1011c358c4bfa5aa628a2089d 100644
--- a/third_party/WebKit/Source/core/frame/ImageBitmap.h
+++ b/third_party/WebKit/Source/core/frame/ImageBitmap.h
@@ -33,12 +33,16 @@ public:
     static PassRefPtrWillBeRawPtr<ImageBitmap> create(ImageData*, const IntRect&);
     static PassRefPtrWillBeRawPtr<ImageBitmap> create(ImageBitmap*, const IntRect&);
     static PassRefPtrWillBeRawPtr<ImageBitmap> create(Image*, const IntRect&);
+    static PassRefPtrWillBeRawPtr<ImageBitmap> create(PassRefPtr<SkImage>);
 
     SkImage* skImage() const { return (m_image) ? m_image.get() : nullptr; }
     int width() const { return (m_image) ? m_image->width(): 0; }
     int height() const { return (m_image) ? m_image->height(): 0; }
     IntSize size() const { return (m_image) ? IntSize(m_image->width(), m_image->height()) : IntSize(); }
 
+    bool isNeutered() const { return m_isNeutered; }
+    PassRefPtr<SkImage> transfer();
+
     ~ImageBitmap() override;
 
     // CanvasImageSource implementation
@@ -56,6 +60,7 @@ private:
     ImageBitmap(ImageData*, const IntRect&);
     ImageBitmap(ImageBitmap*, const IntRect&);
     ImageBitmap(Image*, const IntRect&);
+    ImageBitmap(PassRefPtr<SkImage>);
 
     PassRefPtr<SkImage> cropImage(PassRefPtr<SkImage>, const IntRect&);
 
@@ -64,6 +69,7 @@ private:
     bool requestsHighLiveResourceCachePriority() override { return true; }
 
     RefPtr<SkImage> m_image;
+    bool m_isNeutered;

[sof, 2015/11/16 20:56:17]

nit: if you provide the initial value here (bool m_isNeutered = false;), you
wouldn't have to initialize it in every constructor.

[xidachen, 2015/11/17 15:24:27]

Done.

 };
 
 } // namespace blink