Push API: Fix unsubscribing from GCM on Android

components/gcm_driver/gcm_driver_desktop.cc

 // 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.
 
 #include "components/gcm_driver/gcm_driver_desktop.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 504 matching lines @@
   }
 
   io_thread_->PostTask(
       FROM_HERE,
       base::Bind(&GCMDriverDesktop::IOWorker::Register,
                  base::Unretained(io_worker_.get()),
                  app_id,
                  sender_ids));
 }
 
-void GCMDriverDesktop::UnregisterImpl(const std::string& app_id) {
+void GCMDriverDesktop::UnregisterImpl(const std::string& app_id,
+                                      const std::vector<std::string>& unused) {
   // Delay the unregister operation until GCMClient is ready.
   if (!delayed_task_controller_->CanRunTaskWithoutDelay()) {
     delayed_task_controller_->AddTask(
         base::Bind(&GCMDriverDesktop::DoUnregister,
                    weak_ptr_factory_.GetWeakPtr(),
                    app_id));
     return;
   }
 
   DoUnregister(app_id);
@@ skipping 298 matching lines @@
   DCHECK(ui_thread_->RunsTasksOnCurrentThread());
 
   // Normally request_gcm_statistics_callback_ would not be null.
   if (!request_gcm_statistics_callback_.is_null())
     request_gcm_statistics_callback_.Run(stats);
   else
     LOG(WARNING) << "request_gcm_statistics_callback_ is NULL.";
 }
 
 }  // namespace gcm