Add support for RTL languages in the gtk toolbar layout.
Add support for RTL languages in the gtk toolbar layout.

BUG=none
TEST=Open a browser window in a RTL language (--lang=he).  The toolbar layout should correctly be in RTL layout.
Review URL: http://codereview.chromium.org/147102

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@19162 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser