Annotate memory leaks in GlobalMenuBarRegistrarX11 and GlobalMenuBarX11.

BUG=314087
TBR=erg@chromium.org

Review URL: https://codereview.chromium.org/56373002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232446 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232446