Phase III Step 2: Call imageNotifyFinished() and image load event after SVG loading completes

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

Index: third_party/WebKit/Source/platform/graphics/Image.h
diff --git a/third_party/WebKit/Source/platform/graphics/Image.h b/third_party/WebKit/Source/platform/graphics/Image.h
index f0199925a7f19ea4d0160712ac02ecf8613154a4..e80826ce61f21c2e415950faf10c4881974063a7 100644
--- a/third_party/WebKit/Source/platform/graphics/Image.h
+++ b/third_party/WebKit/Source/platform/graphics/Image.h
@@ -101,7 +101,19 @@ class PLATFORM_EXPORT Image : public ThreadSafeRefCounted<Image> {
   int height() const { return size().height(); }
   virtual bool getHotSpot(IntPoint&) const { return false; }
 
-  enum SizeAvailability { SizeAvailable, SizeUnavailable };
+  enum SizeAvailability {
+    SizeAvailable,
+    SizeUnavailable,
+    SizeAvailableAndLoadingAsynchronously
+  };
+
+  // If setData() returns |SizeAvailableAndLoadingAsynchronously|:
+  //   Image loading is continuing asynchronously
+  //   (only when |this| is SVGImage and |allDataReceived| is true), and
+  //   ImageResourceObserver::loadCompleted() is called when finished.
+  // Otherwise:
+  //   Image loading is completed synchronously.
+  //   ImageResourceObserver::loadCompleted() is not called.
   virtual SizeAvailability setData(PassRefPtr<SharedBuffer> data,
                                    bool allDataReceived);
   virtual SizeAvailability dataChanged(bool /*allDataReceived*/) {