Use union type in ImageBitmapFactories.idl

third_party/WebKit/Source/core/html/HTMLImageElement.h

Index: third_party/WebKit/Source/core/html/HTMLImageElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLImageElement.h b/third_party/WebKit/Source/core/html/HTMLImageElement.h
index 8f14226428507cef825684b8d063b48515137010..407b51c2d65614fc956ae5946774c750d1f54324 100644
--- a/third_party/WebKit/Source/core/html/HTMLImageElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLImageElement.h
@@ -29,6 +29,7 @@
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLImageLoader.h"
 #include "core/html/canvas/CanvasImageSource.h"
+#include "core/imagebitmap/ImageBitmapSource.h"
 #include "platform/graphics/GraphicsTypes.h"
 #include "platform/network/ResourceResponse.h"
 #include "wtf/WeakPtr.h"
@@ -39,7 +40,7 @@ class HTMLFormElement;
 class ImageCandidate;
 class ShadowRoot;
 
-class CORE_EXPORT HTMLImageElement final : public HTMLElement, public CanvasImageSource {
+class CORE_EXPORT HTMLImageElement final : public HTMLElement, public CanvasImageSource, public ImageBitmapSource {
     DEFINE_WRAPPERTYPEINFO();
 public:
     class ViewportChangeListener;
@@ -115,6 +116,10 @@ public:
 
     void forceReload() const;
 
+    // ImageBitmapSource implementation
+    IntSize bitmapSourceSize() const override;
+    bool isHTMLImageElement() const override { return true; }
+
 protected:
     explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false);