GTK: Do more GSEALing.

BUG=79722
R=jhawkins
TBR=sky

Review URL: http://codereview.chromium.org/9371005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@121304 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed