[Mac] Fix "Chrome windows use more 'hidden' space on Exposé/Mission Control".

BUG=81969
TEST=Open http://www.google.com. Make the window small. Mouse over one
of the links on the bar at the top of the page. Then move the mouse up
out of the window. Now, bring up Exposé. The Chrome window should not
have extra blue space around in Exposé when highlighted.

Review URL: http://codereview.chromium.org/10185005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@133565 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed