Refactor android specific code in AudioManagerBase class.

Move android specific code into AudioManagerAndroid class.

Contributed by leozwang@chromium.org (https://chromiumcodereview.appspot.com/14265014/).

BUG=231468

Review URL: https://codereview.chromium.org/14053012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194371 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed