chromeos: Move audio, power, and UI files into subdirs.

This moves more files from chrome/browser/chromeos/ into
subdirectories.

BUG=chromium-os:22896
TEST=did chrome os builds both with and without aura
TBR=sky

Review URL: http://codereview.chromium.org/9125006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@116746 0039d316-1c4b-4281-b951-d872f2087c98
void AudioMixerAlsa::GetVolumeLimits(double* min_volume_db,
                                     double* max_volume_db) {
  base::AutoLock lock(lock_);
  if (min_volume_db)
    *min_volume_db = min_volume_db_;
  if (max_volume_db)
    *max_volume_db = max_volume_db_;
}

void AudioMixerAlsa::GetVolumeLimits(double* min_volume_db,
                                     double* max_volume_db) {
  base::AutoLock lock(lock_);
  if (min_volume_db)
    *min_volume_db = min_volume_db_;
  if (max_volume_db)
    *max_volume_db = max_volume_db_;
}
