GCF activation for alternate content types
GCF activation for alternate content types

Added a few tests to test GCF activation for content 
types other than text/html using HTTP header.

BUG=56269
TEST=new tests added.

Review URL: http://codereview.chromium.org/3528020

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@63133 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