Revert of Delegate dragend to the correct frame's EventHandler.

third_party/WebKit/Source/core/input/MouseEventManager.cpp

Index: third_party/WebKit/Source/core/input/MouseEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/MouseEventManager.cpp b/third_party/WebKit/Source/core/input/MouseEventManager.cpp
index 92deb7c26787c5854fd1489be7ff588db0f2b205..34e32b79981294c4542d26317a7d407db563a378 100644
--- a/third_party/WebKit/Source/core/input/MouseEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/MouseEventManager.cpp
@@ -907,6 +907,11 @@
 
 void MouseEventManager::dragSourceEndedAt(const PlatformMouseEvent& event,
                                           DragOperation operation) {
+  // Send a hit test request so that Layer gets a chance to update the :hover
+  // and :active pseudoclasses..
+  HitTestRequest request(HitTestRequest::Release);
+  EventHandlingUtil::performMouseEventHitTest(m_frame, request, event);
+
   if (dragState().m_dragSrc) {
     dragState().m_dragDataTransfer->setDestinationOperation(operation);
     // For now we don't care if event handler cancels default behavior, since