Push API: use (un)subscription instead of (un)registration

content/renderer/push_messaging/push_messaging_dispatcher.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_PUSH_MESSAGING_PUSH_MESSAGING_DISPATCHER_H_
 #define CONTENT_RENDERER_PUSH_MESSAGING_PUSH_MESSAGING_DISPATCHER_H_
 
 #include <stdint.h>
 #include <string>
 
@@ skipping 32 matching lines @@
       blink::WebServiceWorkerRegistration* service_worker_registration,
       const blink::WebPushSubscriptionOptions& options,
       blink::WebPushSubscriptionCallbacks* callbacks);
 
   void DoSubscribe(
       blink::WebServiceWorkerRegistration* service_worker_registration,
       const blink::WebPushSubscriptionOptions& options,
       blink::WebPushSubscriptionCallbacks* callbacks,
       const Manifest& manifest);
 
-  void OnRegisterFromDocumentSuccess(int32_t request_id,
-                                     const GURL& endpoint,
-                                     const std::string& registration_id);
+  void OnSubscribeFromDocumentSuccess(int32_t request_id,
+                                      const GURL& endpoint,
+                                      const std::string& subscription_id);
 
-  void OnRegisterFromDocumentError(int32_t request_id,
-                                   PushRegistrationStatus status);
+  void OnSubscribeFromDocumentError(int32_t request_id,
+                                    PushRegistrationStatus status);
 
   IDMap<blink::WebPushSubscriptionCallbacks, IDMapOwnPointer>
       subscription_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(PushMessagingDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PUSH_MESSAGING_PUSH_MESSAGING_DISPATCHER_H_