Rename "register" -> "subscribe" in the Push Messaging code.

content/public/browser/push_messaging_service.h

Index: content/public/browser/push_messaging_service.h
diff --git a/content/public/browser/push_messaging_service.h b/content/public/browser/push_messaging_service.h
index c1a6f1cb6a03247deb1bf5a6d9e4ddf34771ddac..3b253b0ae692239103982a7254996db765ea32da 100644
--- a/content/public/browser/push_messaging_service.h
+++ b/content/public/browser/push_messaging_service.h
@@ -22,10 +22,10 @@ class ServiceWorkerContext;
 // push messaging services like GCM. Must only be used on the UI thread.
 class CONTENT_EXPORT PushMessagingService {
  public:
-  using RegisterCallback =
-      base::Callback<void(const std::string& /* registration_id */,
-                          PushRegistrationStatus /* status */)>;
-  using UnregisterCallback = base::Callback<void(PushUnregistrationStatus)>;
+  using SubscribeCallback =
+      base::Callback<void(const std::string& /* subscription_id */,
+                          PushSubscriptionStatus /* status */)>;
+  using UnsubscribeCallback = base::Callback<void(PushUnsubscriptionStatus)>;
 
   using StringCallback = base::Callback<void(const std::string& data,
                                              bool success,
@@ -37,36 +37,36 @@ class CONTENT_EXPORT PushMessagingService {
 
   // Returns the absolute URL exposed by the push server where the webapp server
   // can send push messages. This is currently assumed to be the same for all
-  // origins and push registrations.
+  // origins and push subscriptions.
   virtual GURL GetPushEndpoint() = 0;
 
-  // Register the given |sender_id| with the push messaging service in a
+  // Subscribe the given |sender_id| with the push messaging service in a
   // document context. The frame is known and a permission UI may be displayed
   // to the user.
-  virtual void RegisterFromDocument(const GURL& requesting_origin,
-                                    int64 service_worker_registration_id,
-                                    const std::string& sender_id,
-                                    int renderer_id,
-                                    int render_frame_id,
-                                    bool user_visible,
-                                    const RegisterCallback& callback) = 0;
-
-  // Register the given |sender_id| with the push messaging service. The frame
+  virtual void SubscribeFromDocument(const GURL& requesting_origin,
+                                     int64 service_worker_registration_id,
+                                     const std::string& sender_id,
+                                     int renderer_id,
+                                     int render_frame_id,
+                                     bool user_visible,
+                                     const SubscribeCallback& callback) = 0;
+
+  // Subscribe the given |sender_id| with the push messaging service. The frame
   // is not known so if permission was not previously granted by the user this
   // request should fail.
-  virtual void RegisterFromWorker(const GURL& requesting_origin,
-                                  int64 service_worker_registration_id,
-                                  const std::string& sender_id,
-                                  bool user_visible,
-                                  const RegisterCallback& callback) = 0;
-
-  // Unregister the given |sender_id| from the push messaging service. The
-  // registration will be synchronously deactivated locally, and asynchronously
+  virtual void SubscribeFromWorker(const GURL& requesting_origin,
+                                   int64 service_worker_registration_id,
+                                   const std::string& sender_id,
+                                   bool user_visible,
+                                   const SubscribeCallback& callback) = 0;
+
+  // Unsubscribe the given |sender_id| from the push messaging service. The
+  // subscription will be synchronously deactivated locally, and asynchronously
   // sent to the push service, with automatic retry.
-  virtual void Unregister(const GURL& requesting_origin,
-                          int64 service_worker_registration_id,
-                          const std::string& sender_id,
-                          const UnregisterCallback& callback) = 0;
+  virtual void Unsubscribe(const GURL& requesting_origin,
+                           int64 service_worker_registration_id,
+                           const std::string& sender_id,
+                           const UnsubscribeCallback& callback) = 0;
 
   // Checks the permission status for the requesting origin. Permission is only
   // ever granted when the requesting origin matches the top level embedding
@@ -98,9 +98,9 @@ class CONTENT_EXPORT PushMessagingService {
                           int64 service_worker_registration_id,
                           const StringCallback& callback);
 
-  // Clear the push registration id stored in the service worker with the given
+  // Clear the push subscription id stored in the service worker with the given
   // |service_worker_registration_id| for the given |origin|.
-  static void ClearPushRegistrationID(BrowserContext* browser_context,
+  static void ClearPushSubscriptionID(BrowserContext* browser_context,
                                       const GURL& origin,
                                       int64 service_worker_registration_id,
                                       const base::Closure& callback);