Replaced vector with set for current_jobs_.
This simplify code and make sure that jobs are unique.

BUG=154485, 161569

Review URL: https://chromiumcodereview.appspot.com/11443020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171447 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed