Make alarms schedule at predictable times
Make repeating alarms schedule at the predictable times, i.e., every x minutes,
rather than repeat every x minutes after actual execution (since this may be
different).

BUG=336929

Review URL: https://codereview.chromium.org/145263002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247076 0039d316-1c4b-4281-b951-d872f2087c98
Removes LocaleChangeGuard::Delegate. No one is using it.

BUG=None
R=dpolukhin@chromium.org
TEST=compile succeed

Review URL: https://codereview.chromium.org/147083002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247077 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247077