GitLab

This attempts to clean up shared Ash system tray code
related to displaying the battery status by moving it into
the PowerStatus class. Other classes no longer use the
PowerSupplyStatus struct, and in a following change, I plan
to remove that struct entirely.

BUG=254173

Review URL: https://chromiumcodereview.appspot.com/18176013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@209342 0039d316-1c4b-4281-b951-d872f2087c98