Disable failing tests.

BUG=308905,308906,308908
TBR=dmichael@chromium.org
NOTRY=TRUE

Review URL: https://codereview.chromium.org/29013004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229402 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229402