Add a flag to update hover effect when a layout is changed

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 3b6ee77710df22915610b762ed52406e1aa32728..9ad2b65d24b2282d20e0f0689afa461072837098 100644
--- a/third_party/WebKit/Source/core/input/EventHandler.h
+++ b/third_party/WebKit/Source/core/input/EventHandler.h
@@ -97,7 +97,7 @@ class CORE_EXPORT EventHandler final
 
   void StopAutoscroll();
 
-  void DispatchFakeMouseMoveEventSoon();
+  void DispatchFakeMouseMoveEventSoon(MouseEventManager::FakeMouseMoveReason);
   void DispatchFakeMouseMoveEventSoonInQuad(const FloatQuad&);
 
   HitTestResult HitTestResultAtPoint(
@@ -126,6 +126,10 @@ class CORE_EXPORT EventHandler final
   // testing.
   bool CursorUpdatePending();
 
+  // Return whether sending a fake mouse move is currently pending.  Used for
+  // testing.
+  bool FakeMouseMovePending() const;
+
   void SetResizingFrameSet(HTMLFrameSetElement*);
 
   void ResizeScrollableAreaDestroyed();