C++ Readability review for xians 

I wrote most of the code myself.

The initial CL was created in http://codereview.chromium.org/7081002,  landed in http://codereview.chromium.org/7307021 with the help from Magnus while I was on vocation.
And the code had recently been refactored in https://chromiumcodereview.appspot.com/10662049

The whole review history of the class can be seen: http://src.chromium.org/viewvc/chrome/trunk/src/content/browser/renderer_host/media/audio_input_device_manager.cc?view=log

TEST=content_unittests

Review URL: https://chromiumcodereview.appspot.com/10832268

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@155730 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed