Disable gzip test on chrome frame.
Disable gzip test on chrome frame.

http://codereview.chromium.org/6881106/ introduced a problem on the chrome frame bots.  This
CL is intended to disable the test there.

BUG=None
TEST=chrome frame bots are green.

Review URL: http://codereview.chromium.org/6992037

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@86504 0039d316-1c4b-4281-b951-d872f2087c98

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