GitLab

A small fix so that modifying the existing code becomes safer.

BUG=none
TEST=SyncTaskManagerTest.ScheduleAndCancelTask

Review URL: https://chromiumcodereview.appspot.com/23513021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@222214 0039d316-1c4b-4281-b951-d872f2087c98