Make ImageBitmap transferable work with ImageBitmapOptions

third_party/WebKit/Source/platform/graphics/StaticBitmapImage.h

Index: third_party/WebKit/Source/platform/graphics/StaticBitmapImage.h
diff --git a/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.h b/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.h
index bd36802ec110e53a8839116912b8bc28f06a2fe2..18c2f8308570d9e3aa4ef55206a035658ddd0256 100644
--- a/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.h
+++ b/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.h
@@ -25,11 +25,16 @@ public:
 
     bool originClean() const { return m_isOriginClean; }
     void setOriginClean(bool flag) { m_isOriginClean = flag; }
+    bool isPremultiplied() const { return m_isPremultiplied; }
+    void setPremultiplied(bool flag) { m_isPremultiplied = flag; }
 protected:
     StaticBitmapImage(PassRefPtr<SkImage>);
 
     RefPtr<SkImage> m_image;
     bool m_isOriginClean = true;
+    // The premultiply info is stored here because the SkImage API
+    // doesn't expose this info.
+    bool m_isPremultiplied = true;
 };
 
 } // namespace blink