Fix draggable elements are painted at incorrect position

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

Index: third_party/WebKit/Source/core/input/EventHandler.h
diff --git a/third_party/WebKit/Source/core/input/EventHandler.h b/third_party/WebKit/Source/core/input/EventHandler.h
index 0674625268707e3dcfe469af9634a3b4d7956b3e..ad208861d5a32309141f3ecd94b9cc9309d004ef 100644
--- a/third_party/WebKit/Source/core/input/EventHandler.h
+++ b/third_party/WebKit/Source/core/input/EventHandler.h
@@ -133,6 +133,8 @@ public:
 
     IntPoint lastKnownMousePosition() const;
 
+    IntPoint dragDataTransferLocationForTesting();
+
     // 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);