Remove an obsolete comment.

The code this is referring to has moved. It's now checked as part of testing
whether metrics reporting is enabled, internally to the metrics code.

BUG=none
TEST=none
R=asvitkine@chromium.org
TBR=thestig@chromium.org

Review URL: https://codereview.chromium.org/295103010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272525 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chrome_browser_main.cc

@@ -565,7 +565,6 @@ void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
     base::FieldTrial::EnableBenchmarking();
 
   // Ensure any field trials specified on the command line are initialized.
-  // Also stop the metrics service so that we don't pollute UMA.
   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
     std::set<std::string> unforceable_field_trials;
 #if defined(OFFICIAL_BUILD)