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

third_party/WebKit/LayoutTests/fast/events/resources/expect-cursor-update.js

Index: third_party/WebKit/LayoutTests/fast/events/resources/expect-cursor-update.js
diff --git a/third_party/WebKit/LayoutTests/fast/events/resources/expect-cursor-update.js b/third_party/WebKit/LayoutTests/fast/events/resources/expect-cursor-update.js
index ab01bbb715175b4c3ac8e1e41a0310345f067e9f..269951779e83bf30b72b5aa28e2ebc93564faf85 100644
--- a/third_party/WebKit/LayoutTests/fast/events/resources/expect-cursor-update.js
+++ b/third_party/WebKit/LayoutTests/fast/events/resources/expect-cursor-update.js
@@ -19,3 +19,22 @@ function expectCursorUpdate(expectedInfo, completion) {
         requestAnimationFrame(onFrame);
     });
 }
+
+function expectSendFakeMouseMove(expectedInfo, completion) {
+    // Need to give style application a chance to take effect first.
+    requestAnimationFrame(function() {
+        // Note that fakeMouseMovePending should (almost?) always be true at this
+        // point, but we probably shouldn't depend on that in case scheduler changes
+        // result in rAF not firing until after the fake_mouse_move_event_timer_ as
+        // already fired.
+        var onFrame = function() {
+            if (internals.fakeMouseMovePending) {

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

Is there any reason we don't wait for cursorUpdatePending as well? Does
fakeMouseMovePending cover that?

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

Yes, they are different. When we sent fake mouse move events, and we have to use
fakeMouseMovePending to decide if we have received the events. Using
cursorUpdatePending will give the wrong result.

+                requestAnimationFrame(onFrame);
+            } else {
+                shouldBeEqualToString('internals.getCurrentCursorInfo()', expectedInfo);
+                completion();
+            }
+        }
+        requestAnimationFrame(onFrame);
+    });
+}