Provide a mechanism for the GCM driver to send message receipts to GCM.

components/gcm_driver/gcm_driver_desktop.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 COMPONENTS_GCM_DRIVER_GCM_DRIVER_DESKTOP_H_
 #define COMPONENTS_GCM_DRIVER_GCM_DRIVER_DESKTOP_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 139 matching lines @@
   void DoGetToken(const std::string& app_id,
                   const std::string& authorized_entity,
                   const std::string& scope,
                   const std::map<std::string, std::string>& options);
   void DoDeleteToken(const std::string& app_id,
                      const std::string& authorized_entity,
                      const std::string& scope);
 
   // Callbacks posted from IO thread to UI thread.
   void MessageReceived(const std::string& app_id,
-                       const IncomingMessage& message);
+                       const IncomingMessage& message,
+                       const MessageReceiptCallback& receipt_callback);
   void MessagesDeleted(const std::string& app_id);
   void MessageSendError(const std::string& app_id,
                         const GCMClient::SendErrorDetails& send_error_details);
   void SendAcknowledged(const std::string& app_id,
                         const std::string& message_id);
   void GCMClientReady(const std::vector<AccountMapping>& account_mappings,
                       const base::Time& last_token_fetch_time);
   void OnConnected(const net::IPEndPoint& ip_endpoint);
   void OnDisconnected();
   void OnStoreReset();
 
   void GetGCMStatisticsFinished(const GCMClient::GCMStatistics& stats);
   void GetInstanceIDDataFinished(const std::string& app_id,
                                  const std::string& instance_id,
                                  const std::string& extra_data);
   void GetTokenFinished(const std::string& app_id,
                         const std::string& authorized_entity,
                         const std::string& scope,
                         const std::string& token,
                         GCMClient::Result result);
   void DeleteTokenFinished(const std::string& app_id,
                            const std::string& authorized_entity,
                            const std::string& scope,
                            GCMClient::Result result);
 
+  void DoSendMessageReceipt(const MessageReceiptCallback& receipt_callback,
+                            GCMMessageStatus status);

[Peter Beverloo, 2017/02/13 13:47:07]

Please add this around line 157.

[harkness, 2017/02/14 19:22:29]

Done.

+
   std::unique_ptr<GCMChannelStatusSyncer> gcm_channel_status_syncer_;
 
   // Flag to indicate whether the user is signed in to a GAIA account.
   bool signed_in_;
 
   // Flag to indicate if GCM is started.
   bool gcm_started_;
 
   // Flag to indicate if GCM is enabled.
   bool gcm_enabled_;
@@ skipping 40 matching lines @@
 
   // Used to pass a weak pointer to the IO worker.
   base::WeakPtrFactory<GCMDriverDesktop> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMDriverDesktop);
 };
 
 }  // namespace gcm
 
 #endif  // COMPONENTS_GCM_DRIVER_GCM_DRIVER_DESKTOP_H_