GitLab

When dragging a window from shelf, if the window should be taken to home
screen after the drag ends, use scale-in animation to show home screen.
If overview is active, then fade out overview windows.

Bug: 997885, 1026944
Change-Id: I11b92e152679fe32efc2fae0b30b71dcba4ccc74
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1949276
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721694}