GitLab

BUG=123609
TEST=With UMA enabled (not Chromium), visit www.google.com and ensure that the request header includes X-Chrome-UMA-Enabled with value "1". Also, ensure that unit_tests GoogleUtilTests all pass.

Review URL: http://codereview.chromium.org/10054029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@132479 0039d316-1c4b-4281-b951-d872f2087c98