GitLab

RotateHidingWindowAnimationObserver is leaking from
wm::AnimateOnChildWindowVisibilityChanged() because it's not observing
animation events. The fix is to make RotateHidingWindowAnimationObserver
observe the animation events.

BUG=389296
TEST=wm_unittests:WindowAnimationsTest.RotateHideNoLeak

Review URL: https://codereview.chromium.org/343753007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283970 0039d316-1c4b-4281-b951-d872f2087c98