Use a union typdef for the return type of canvas.getContext

third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.cpp

Index: third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.cpp
diff --git a/third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.cpp b/third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.cpp
index bc5612619ee910980c9c740422295a099f78f112..f6c212940c9e3a85c076239468e6eade42658f17 100644
--- a/third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.cpp
+++ b/third_party/WebKit/Source/modules/imagebitmap/ImageBitmapRenderingContext.cpp
@@ -4,6 +4,7 @@
 
 #include "modules/imagebitmap/ImageBitmapRenderingContext.h"
 
+#include "bindings/modules/v8/UnionTypesModules.h"
 #include "core/frame/ImageBitmap.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/StaticBitmapImage.h"
@@ -19,6 +20,11 @@ ImageBitmapRenderingContext::ImageBitmapRenderingContext(HTMLCanvasElement* canv
 
 ImageBitmapRenderingContext::~ImageBitmapRenderingContext() { }
 
+void ImageBitmapRenderingContext::setCanvasGetContextResult(RenderingContext& result)
+{
+    result.setImageBitmapRenderingContext(RefPtrWillBeRawPtr<ImageBitmapRenderingContext>(this));

[sof, 2016/03/09 22:05:26]

Another PassRefPtr<> needed here.

+}
+
 void ImageBitmapRenderingContext::transferImageBitmap(ImageBitmap* imageBitmap)
 {
     m_image = imageBitmap->bitmapImage();