Revert 187690 "Audio indicator: cross platform drawing and anima..."

> Audio indicator: cross platform drawing and animation
> 
> This CL adds a new class, TabAudioIndicator, that does cross-platform
> drawing and animating of the audio indicator.
> 
> BUG=3541
> TEST=Verified that TabAudioIndicatorTest.* passed. UI changes to come in a later patch.
> 
> Review URL: https://codereview.chromium.org/12744003

TBR=sail@chromium.org

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@187692 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed