The scroll latching feature for touchpad and wheel scrolls is enabled behind a flag.
The current patch includes the flag definition and wheel scroll latching.
The touchpad scroll latching support will be added in different cls.
To test it, use the --enable-features=TouchpadScrollLatching runtime flag.
BUG=526463
TEST=MouseWheelEventQueueTests/MouseWheelEventQueueTest.WheelScrollLatching/0, MouseWheelEventQueueTests/MouseWheelEventQueueTest.WheelScrollLatching/1
Review-Url: https://codereview.chromium.org/2158423002
Cr-Commit-Position: refs/heads/master@{#411974}
11 files changed
