cros: Ensure O2RT is associated with correct account id.

- Use primary account id when it is available. In regular sign-in,
  this should be the one set in prefs::kGoogleServicesUsername in
  login_utils.cc;
- If primary account id does not exist (rare case), fetch it from Gaia
  and use Chrome's canonicalized form;

BUG=323226

Review URL: https://codereview.chromium.org/102953003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238640 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238640
Picks up r167 in libaddressinput.

https://code.google.com/p/libaddressinput/source/detail?r=167

R=rouslan@chromium.org
BUG=317837

Review URL: https://codereview.chromium.org/103013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238641 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238642 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238642