Add a Create method to DesktopNotificationHandler and stubs for the notification objects.

chrome/browser/notifications/desktop_notification_service.cc

Index: chrome/browser/notifications/desktop_notification_service.cc
diff --git a/chrome/browser/notifications/desktop_notification_service.cc b/chrome/browser/notifications/desktop_notification_service.cc
index 205afb617c293a044ef06e7aabddbd26d1bf439e..f03cb03585c22eb3c3dcfa2ba790b85cc228644b 100644
--- a/chrome/browser/notifications/desktop_notification_service.cc
+++ b/chrome/browser/notifications/desktop_notification_service.cc
@@ -591,3 +591,7 @@ void DesktopNotificationService::NotifySettingsChange() {
       Source<DesktopNotificationService>(this),
       NotificationService::NoDetails());
 }
+
+int DesktopNotificationService::HasPermission(const GURL& origin) {
+  return prefs_cache()->HasPermission(origin.GetOrigin());

[John Gregg, 2011/06/06 17:12:27]

In what context is this function called?  See the comments for prefs_cache() --
it's meant literally as a cache for the use of the IPC handler without jumping
to the UI thread.  If you're on the UI thread here, you should look directly at
the content settings.

[Satish, 2011/06/06 20:36:43]

This should be called from the IO thread alone, added a DCHECK here.

+}