Disable TwentyTabsUserQuit in debug because it takes ~600 seconds to run.
Disable TwentyTabsUserQuit in debug because it takes ~600 seconds to run.

This is causing frequent timeouts on the slaves.

BUG=110471

Review URL: http://codereview.chromium.org/10012032

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@131108 0039d316-1c4b-4281-b951-d872f2087c98

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