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Pings weren't sent, so this information was only collected locally.
However, other parts of the RLZ code don't collect events for non-branded
builds at all, so don't do it here either.

BUG=141108,138158


Review URL: https://chromiumcodereview.appspot.com/10829302

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151345 0039d316-1c4b-4281-b951-d872f2087c98