Enable using of canonical server config for c.youtube.com.

BUG=

Review URL: https://codereview.chromium.org/39123002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231070 0039d316-1c4b-4281-b951-d872f2087c98
Look for disk uuid instead of dbus machine-id file.

BUG=311310

Review URL: https://codereview.chromium.org/41973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231072 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231070
SVN changes up to revision 231072
Revert 231069 "Re-attempt to fix the calendar widget.  Previous ..."

> Re-attempt to fix the calendar widget.  Previous attempts
> to land this patch have failed with memory corruption
> errors on CrOS which only appear on the waterfall.  sky@
> has pointed out a potential null pointer dereference, so
> this is an attempt to see if adding a null check fixes the
> issue.
> 
> Unfortunately we know of no way to test this without
> actually committing the patch (since the issue does not
> seem to reproduce on trybots), so sheriffs take note that
> if this CL shows up on the blame list for a buildbot
> failure in CrOS content tests, please revert it.
> 
> BUG=176221
> TBR=sky
> 
> Review URL: https://codereview.chromium.org/40263005

TBR=zturner@chromium.org

Review URL: https://codereview.chromium.org/43273006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231073 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231073