gtk: Tweak omnibox and tab font sizes.

This makes tab titles a bit smaller (13->12 px) and the
omnibox text a bit larger (13->14 px).  The omnibox text
size is only changed when a non-GTK+ theme is being used; we
continue using GTK+'s default font otherwise.

BUG=77285
TEST=manual: built it and checked that the font sizes are changed as specified above

Review URL: http://codereview.chromium.org/6711089

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@79560 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed