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 869a047723665282e36ae97a980cdff80f53a49a..e2c390b8a8482e0e427aa33c79ebdcb60a3b4897 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 { kSizeAvailable, kSizeUnavailable };
+  enum SizeAvailability {
+    kSizeAvailable,
+    kSizeUnavailable,
+    kSizeAvailableAndLoadingAsynchronously
+  };
+
+  // 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 all_data_received);
   virtual SizeAvailability DataChanged(bool /*allDataReceived*/) {