Provide a link to restart chrome when changing gpu settings

chrome/browser/resources/options/browser_options.js

Index: chrome/browser/resources/options/browser_options.js
===================================================================
--- chrome/browser/resources/options/browser_options.js	(revision 188856)
+++ chrome/browser/resources/options/browser_options.js	(working copy)
@@ -467,6 +467,16 @@
         }
       }
 
+      // System section.
+      $('hardwareAccelerationModeChange').style.visibility = 'hidden';
+      $('hardwareAccelerationModeCheckbox').onclick = function(event) {
+        $('hardwareAccelerationModeChange').style.visibility = 'visible';
+      };
+      $('hardwareAccelerationModeChangeRestartLink').onclick =
+          function(event) {
+        chrome.send('restartBrowser');
+      };
+
       if (loadTimeData.getBoolean('managedUsersEnabled') &&
           loadTimeData.getBoolean('profileIsManaged')) {
         $('managed-user-settings-section').hidden = false;