Modifies setup's fallback language order.  If Omaha has a language specified in the registry, use that one first.
Modifies setup's fallback language order.  If Omaha has a language specified in the registry, use that one first.

R=cpu,kuchhal
BUG=39986
TEST=Install Chrome with a "lang" parameter specified to Omaha different than the system language.  Then run setup.exe --show-eula and observe the EULA dialog is in one language, the one specified in the "lang" parameter.

Review URL: http://codereview.chromium.org/1518019

git-svn-id: http://src.chromium.org/svn/trunk/src@44088 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1ab800625942ae2c3de3aec4406d3f9fd4d067a7
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