GitLab

These cleanup changes were pulled out from:
http://codereview.chromium.org/10834203

Use the cloud print device displayName instead of name.
(these are editable names shown on the cloud print dash)
Call NOTREACHED on any task posting failure.
Extract UpdateCommandState utility function.
Rename & refactor RefreshAccessToken->RequestAccessToken.
Rename RequestSearch->RequestDeviceSearch.
Make HasMobiles const; consolidate access_token_ DCHECKs.
Misc comment updates.

BUG=102709
TEST=No Chrome To Mobile regressions, device display names reflected.

Review URL: https://chromiumcodereview.appspot.com/10828353

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151995 0039d316-1c4b-4281-b951-d872f2087c98