Add chrome_frame_helper.exe to the set of key files for Chrome Frame as that could be in use while npchrome_frame.dll isn't.
Add chrome_frame_helper.exe to the set of key files for Chrome Frame as that could be in use while npchrome_frame.dll isn't.

BUG=NONE
TEST=NONE
Review URL: http://codereview.chromium.org/6677078

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@81739 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