Restore the stacking order of a window after cycling past it.

BUG=310268
TEST=WindowSelectorTest.CyclePreservesStackingOrder, WindowSelectorTest.CyclePreservesMinimization

Review URL: https://codereview.chromium.org/36003002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230489 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230489