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

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

Index: third_party/WebKit/Source/core/input/MouseEventManager.h
diff --git a/third_party/WebKit/Source/core/input/MouseEventManager.h b/third_party/WebKit/Source/core/input/MouseEventManager.h
index 0a1f7b406524bfee617a789b74c6b476c1897754..86538aff6b329e31ee2f8ac8026abfd4dd412e61 100644
--- a/third_party/WebKit/Source/core/input/MouseEventManager.h
+++ b/third_party/WebKit/Source/core/input/MouseEventManager.h
@@ -30,6 +30,8 @@ class ScrollManager;
 
 enum class DragInitiator;
 
+enum class DispatchInterval { kDuringScroll, kPerFrame };

[dtapuska, 2017/06/28 19:15:18]

Perhaps this can be scoped into the EventHandler class? As well the
DispatchInterval name is a little odd since it isn't an Interval. Maybe
something like FakeMouseMoveReason?

[lanwei, 2017/07/04 18:37:15]

Done.

+
 // This class takes care of dispatching all mouse events and keeps track of
 // positions and states of mouse.
 class CORE_EXPORT MouseEventManager final
@@ -87,7 +89,7 @@ class CORE_EXPORT MouseEventManager final
   void FakeMouseMoveEventTimerFired(TimerBase*);
 
   void CancelFakeMouseMoveEvent();
-  void DispatchFakeMouseMoveEventSoon();
+  void DispatchFakeMouseMoveEventSoon(DispatchInterval);
   void DispatchFakeMouseMoveEventSoonInQuad(const FloatQuad&);
 
   void SetLastKnownMousePosition(const WebMouseEvent&);
@@ -148,6 +150,8 @@ class CORE_EXPORT MouseEventManager final
 
   bool MouseDownMayStartDrag();
 
+  bool FakeMouseMovePending();

[dtapuska, 2017/06/28 19:15:18]

const?

[lanwei, 2017/07/04 18:37:15]

Done.

+
  private:
   class MouseEventBoundaryEventDispatcher : public BoundaryEventDispatcher {
     WTF_MAKE_NONCOPYABLE(MouseEventBoundaryEventDispatcher);