Fixed problem with missing maximized mode destructor. Odd must have been removed by a merge operation.

Very odd. This was there - but somehow it got lost. Must have been some merge operation. 

BUG=348070
TEST=manual

Review URL: https://codereview.chromium.org/185393002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254613 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254613