Fix the failing ChromeFrame BeginningTransaction unit test. The user agent value in the http headers needs to be  terminated with a trailing \r\n\r\n combination instead of a single \r\n value.
Fix the failing ChromeFrame BeginningTransaction unit test. The user agent value in the http headers needs to be 
terminated with a trailing \r\n\r\n combination instead of a single \r\n value.

TBR=stoyan

Review URL: http://codereview.chromium.org/3019010

git-svn-id: http://src.chromium.org/svn/trunk/src@52871 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 65522d96c9ffef1e1eb156ac2caabca289a375fc
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