Fix for issue 51693, which was a regression from integrating the open source
version of RLZ into Chromium.  Chromium should never send RLZ pings to Google,
only Google Chrome should do so.

Removing dependency from rlz chrome extenion api to RLZTracker since it is
not required.

BUG=51693
TEST=Install Chromium on a clean machine and make sure no pings are sent to
http://client1.google.com/tools/pso/ping?...

Review URL: http://codereview.chromium.org/3146007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56032 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed