| Index: third_party/WebKit/Source/core/events/DragEvent.cpp | 
| diff --git a/third_party/WebKit/Source/core/events/DragEvent.cpp b/third_party/WebKit/Source/core/events/DragEvent.cpp | 
| index 9baa4b83fe048abfe77f87226b376d33557743f2..1d0e1fc97ed264bdd1c2ec704349c4a29000f738 100644 | 
| --- a/third_party/WebKit/Source/core/events/DragEvent.cpp | 
| +++ b/third_party/WebKit/Source/core/events/DragEvent.cpp | 
| @@ -46,7 +46,10 @@ DragEvent::DragEvent(const AtomicString& eventType, bool canBubble, bool cancela | 
| PlatformMouseEvent::SyntheticEventType syntheticEventType) | 
| : MouseEvent(eventType, canBubble, cancelable, view, detail, screenX, screenY, | 
| windowX, windowY, movementX, movementY, modifiers, button, buttons, relatedTarget, | 
| -        platformTimeStamp, syntheticEventType) | 
| +        platformTimeStamp, syntheticEventType, | 
| +        // TODO(zino): Should support canvas hit region because the drag event | 
| +        // is a kind of mouse event. Please see http://crbug.com/594073 | 
| +        String()) | 
| , m_dataTransfer(dataTransfer) | 
|  | 
| { | 
|  |