Disable playback controls if audio/video element has errored.
Disable playback controls if audio/video element has errored.

TEST=load an audio/video with an unsupported input, then right click on it.. the playback control items should be disabled
BUG=19740

Review URL: http://codereview.chromium.org/174119


git-svn-id: http://src.chromium.org/svn/trunk/src@23853 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 3c52673b8010dff4defca81a67d377259ce990d8
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