Fix the newly added OverrideUserAgent net test so that it works in ChromeFrame where the chromeframe suffix is added to the outgoing UA.
Fix the newly added OverrideUserAgent net test so that it works in ChromeFrame where the
chromeframe suffix is added to the outgoing UA.

BUG=none
TEST=Existing OverideUserAgent test should pass in the regular and ChromeFrame case.
R=wtc

Review URL: http://codereview.chromium.org/6369008

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@72228 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