[GTK] undo more toolbar destruction - unbreak GTK+ theme mode home button

BUG=51325
TEST=showing home button in gtk+ should work

Review URL: http://codereview.chromium.org/3083018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@55159 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed