Add support for GCM subtypes to desktop Instance ID implementation

components/gcm_driver/fake_gcm_client.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/fake_gcm_client.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 62 matching lines @@
 }
 
 void FakeGCMClient::Initialize(
     const ChromeBuildInfo& chrome_build_info,
     const base::FilePath& store_path,
     const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner,
     const scoped_refptr<net::URLRequestContextGetter>&
         url_request_context_getter,
     std::unique_ptr<Encryptor> encryptor,
     Delegate* delegate) {
+  category_for_subtypes_ = chrome_build_info.category_for_subtypes;
   delegate_ = delegate;
 }
 
 void FakeGCMClient::Start(StartMode start_mode) {
   DCHECK(io_thread_->RunsTasksOnCurrentThread());
 
   if (started_)
     return;
 
   if (start_mode == IMMEDIATE_START)
@@ skipping 225 matching lines @@
     delegate_->OnMessageSendError(app_id, send_error_details);
 }
 
 void FakeGCMClient::SendAcknowledgement(const std::string& app_id,
                                         const std::string& message_id) {
   if (delegate_)
     delegate_->OnSendAcknowledged(app_id, message_id);
 }
 
 }  // namespace gcm