Switch Blink to the new Web Notifications permission path.

public/web/WebNotificationPresenter.h

Index: public/web/WebNotificationPresenter.h
diff --git a/public/web/WebNotificationPresenter.h b/public/web/WebNotificationPresenter.h
index 5ceb2135170c5288493a0a2fbe98ae1703303acf..b7463ce4982c1c1aceda5948c2d6099414750c4c 100644
--- a/public/web/WebNotificationPresenter.h
+++ b/public/web/WebNotificationPresenter.h
@@ -63,12 +63,6 @@ public:
 
     // Checks the permission level for the given origin.
     virtual Permission checkPermission(const WebSecurityOrigin&) = 0;
-
-    // Requests permission for a given origin.  This operation is asynchronous and the callback provided
-    // will be invoked when the permission decision is made.  Callback pointer must remain
-    // valid until called.
-    // FIXME: Remove once permission requests will be routed through the NotificationPermissionClient.
-    virtual void requestPermission(const WebSecurityOrigin&, WebNotificationPermissionCallback*) = 0;
 };
 
 } // namespace blink