Disable accelerated compositing for audio-only <video> tags. Uses the new API introduced in http://trac.webkit.org/changeset/103857.
Disable accelerated compositing for audio-only <video> tags.
Uses the new API introduced in http://trac.webkit.org/changeset/103857.

BUG=102329
TEST=manually tested w/ MediaDocument and mp3 & mp4 files.

Review URL: http://codereview.chromium.org/9041016

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@116702 0039d316-1c4b-4281-b951-d872f2087c98

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