GitLab

There should be no behavior change. It's just moving code
out of RequestRegistry.

BUG=164098

Review URL: https://chromiumcodereview.appspot.com/17379020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@207847 0039d316-1c4b-4281-b951-d872f2087c98