GitLab

Two small tweaks to the audio indicator:
  - change the equalizer levels to look better with fewer bars
  - make animation slightly faster 300 ms per frame to 250 ms per frame.
This doesn't noticeably increase CPU usage on my machine.

Also fixed a small bug where the indicator would be drawn incorrectly
when an equalizer level was 0.

BUG=3541
TEST=Played a youtube video. Verified that the audio indicator in the
     favicon was updated.

Review URL: https://codereview.chromium.org/14139022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194657 0039d316-1c4b-4281-b951-d872f2087c98