Disable video-src-set since it is flaky.
Disable video-src-set since it is flaky.

BUG:13907
TEST: The one I'm disabling.

Review URL: http://codereview.chromium.org/155878

git-svn-id: http://src.chromium.org/svn/trunk/src@21291 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 5942fc816c73ea3de7466884367cc110a073b8d2
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser