Don't run chrome_frame_tests on win7_aura trybot.
Don't run chrome_frame_tests on win7_aura trybot.

Some work needs to be done for the tests to run on a machine without a
GPU (like the bots).

BUG=223560

Review URL: https://chromiumcodereview.appspot.com/16197002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@202892 0039d316-1c4b-4281-b951-d872f2087c98

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