Adds a context message of the security origin for web notifications.

chrome/test/data/notifications/platform_notification_service.html

Index: chrome/test/data/notifications/platform_notification_service.html
diff --git a/chrome/test/data/notifications/platform_notification_service.html b/chrome/test/data/notifications/platform_notification_service.html
index 3fc27dc0c659d24c5ebcb40b343728e16cc8634e..5121de2742202e60ceb7624eaa70fd7dd5d88e7a 100644
--- a/chrome/test/data/notifications/platform_notification_service.html
+++ b/chrome/test/data/notifications/platform_notification_service.html
@@ -15,8 +15,8 @@
       // Requests permission to display Web Notifications. Will return the
       // permission level to the DOM Automation Controller.
       function RequestPermission() {
-        Notification.requestPermission(function (level) {
-          domAutomationController.send(level);
+        Notification.requestPermission(function () {
+          domAutomationController.send(Notification.permission);

[Peter Beverloo, 2015/01/27 13:37:04]

Are you doing this because |level| will say "granted" for file:// URLs, whereas
Notification.permission or checking the permission afterwards will return
"default"?

In that case, I'd prefer to check the value of Notification.permission
separately, since this kind of hides the fact that we're doing it wrong.

[dewittj, 2015/01/27 23:10:12]

Yes, that's correct.  I've reimplemented this by reverting the html file and
using the DesktopNotificationService to check permissions; does this seem OK to
you?  Or would you prefer a CheckStaticNotificationPermission() function within
the JS that I call separately?

         });
       }
 
@@ -104,4 +104,4 @@
       }
     </script>
   </body>
-</html>
+</html>