Don't show "requires Chrome restart" when toggling stats reporting on Mac OS X

chrome/browser/resources/options/browser_options.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.exportPath('options');
 
 /**
  * @typedef {{actionLinkText: (string|undefined),
  *            childUser: (boolean|undefined),
  *            hasError: (boolean|undefined),
@@ skipping 444 matching lines @@
         // text" where both starting text and ending text may or may not be
         // present, but the split should always be in three pieces.
         var restartElements =
             $('metrics-reporting-reset-restart').querySelectorAll('*');
         for (var i = 0; i < restartTextFragments.length; i++) {
           restartElements[i].textContent = restartTextFragments[i];
         }
         restartElements[1].onclick = function(event) {
           chrome.send('restartBrowser');
         };
-        // Attach the listener for updating the checkbox and restart button.
-        var updateMetricsRestartButton = function() {
+        $('metrics-reporting-enabled').onclick = function(event) {
+          chrome.send('metricsReportingCheckboxChanged',
+              [Boolean(event.currentTarget.checked)]);
+          if (cr.isMac) {
+            // A browser restart is never needed to toggle metrics reporting,
+            // and is only needed to toggle crash reporting when using Breakpad.
+            // Crashpad, used on Mac, does not require a browser restart.
+            return;
+          }
           $('metrics-reporting-reset-restart').hidden =
               loadTimeData.getBoolean('metricsReportingEnabledAtStart') ==
                   $('metrics-reporting-enabled').checked;
         };
-        $('metrics-reporting-enabled').onclick = function(event) {
-          chrome.send('metricsReportingCheckboxChanged',
-              [Boolean(event.currentTarget.checked)]);
-          updateMetricsRestartButton();
-        };
         $('metrics-reporting-enabled').checked =
             loadTimeData.getBoolean('metricsReportingEnabledAtStart');
-        updateMetricsRestartButton();
       }
       // 'rappor-setting' element is only present on Chrome branded builds.
       if ($('rappor-setting')) {
         $('rappor-setting').hidden =
             !loadTimeData.getBoolean('hasRapporOption');
       }
       $('networkPredictionOptions').onchange = function(event) {
         var value = (event.target.checked ?
             NetworkPredictionOptions.WIFI_ONLY :
             NetworkPredictionOptions.NEVER);
@@ skipping 1777 matching lines @@
       }
       button.textContent = loadTimeData.getString(strId);
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });