Revert "Disabling tests that are failing."
Revert "Disabling tests that are failing."

Enabling plugin tests as they seem to be running fine on local machine. Lets
see how they do on buildbot.

TBR=pkasting
BUG=7983

Review URL: http://codereview.chromium.org/27167


git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@10385 0039d316-1c4b-4281-b951-d872f2087c98

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