Make chrome_frame_tests a non-default test for the Windows builders.
Make chrome_frame_tests a non-default test for the Windows builders.

The desire is to be able to run chrome_frame_tests on-demand on any Windows trybot.  Currently they can only be run by request on the win_cf bot.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/9684002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@127221 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build