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;

[Navid Zolghadr, 2017/07/05 17:37:33]

I wonder if there is a macro when building the testing targets
https://cs.chromium.org/chromium/src/third_party/WebKit/Source/core/BUILD.gn?...

that we can check and only expose this API with a #if instead of always exposing
this API.

[lanwei, 2017/07/06 03:04:34]

Sorry, I did not find a macro for testing.

[Navid Zolghadr, 2017/07/06 15:06:47]

I couldn't find any existing one either. Dave, do you think it is worth defining
a FOR_TESTING_ONLY or something like that in the corresponding testing target in
https://cs.chromium.org/chromium/src/third_party/WebKit/Source/core/BUILD.gn?...
?

[Navid Zolghadr, 2017/07/06 15:26:44]

Nevermind. There are already other testing only APIs in this class anyway. It is
better to move them all around later together.

[dtapuska, 2017/07/07 19:59:33]

No we generally don't care for ifdef's.. Just add the functions and the name is
fine because the CursorUpdatePending is already there.interped

+
   void SetResizingFrameSet(HTMLFrameSetElement*);
 
   void ResizeScrollableAreaDestroyed();