Adding a secondary mini_installer target for Chrome Frame. This will remove the need to have different build scripts to build either Chrome or Chrome Frame.

Also remove the now-unneeded gyp variables 'chrome_frame_define' and 'google_update_appid'.

BUG=Both Chrome and Chrome Frame products should be buildable from a single solution file - we shouldn't need to run GYP with different settings to get a CF solution.
TEST=none


Review URL: http://codereview.chromium.org/542078

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@36546 0039d316-1c4b-4281-b951-d872f2087c98