Prevent soft_gpu_tests from creating FAILS_ and DIFF_ files when img diff is incorrect
Prevent soft_gpu_tests from creating FAILS_ and DIFF_ files when img diff is incorrect

BUG=None
TEST=Files are not generated for soft_gpu_tests

Review URL: http://codereview.chromium.org/10043002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@131615 0039d316-1c4b-4281-b951-d872f2087c98

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