UpdateZoomControls honors the global enabled state of the zoom commands. BUG=None TEST=Test zooming.
UpdateZoomControls honors the global enabled state of the zoom commands.
BUG=None
TEST=Test zooming.

Review URL: http://codereview.chromium.org/3055006

git-svn-id: http://src.chromium.org/svn/trunk/src@53221 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 50b5015bc3fa5f4f5836a969da1d6cf1d0e3e6ea
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser