Fix draggable elements are painted at incorrect position

third_party/WebKit/Source/core/input/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 115 matching lines @@
 
     // Return whether a mouse cursor update is currently pending.  Used for testing.
     bool cursorUpdatePending();
 
     void setResizingFrameSet(HTMLFrameSetElement*);
 
     void resizeScrollableAreaDestroyed();
 
     IntPoint lastKnownMousePosition() const;
 
+    IntPoint dragDataTransferLocation();

[fs, 2016/02/23 17:27:45]

...ForTesting()?

[hyunjunekim2, 2016/02/24 13:06:36]

Done.

+
     // Attempts to scroll the DOM tree. If that fails, scrolls the view.
     // If the view can't be scrolled either, recursively bubble to the parent frame.
     bool bubblingScroll(ScrollDirection, ScrollGranularity, Node* startingNode = nullptr);
 
     WebInputEventResult handleMouseMoveEvent(const PlatformMouseEvent&);
     void handleMouseLeaveEvent(const PlatformMouseEvent&);
 
     WebInputEventResult handleMousePressEvent(const PlatformMouseEvent&);
     WebInputEventResult handleMouseReleaseEvent(const PlatformMouseEvent&);
     WebInputEventResult handleWheelEvent(const PlatformWheelEvent&);
@@ skipping 310 matching lines @@
     // scroll which shouldn't propagate can't cause any element to
     // scroll other than the |m_previousGestureScrolledNode|.
     bool m_deltaConsumedForScrollSequence;
 };
 
 } // namespace blink
 
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::EventHandler::TouchInfo);
 
 #endif // EventHandler_h