Add support for GCM subtypes to desktop Instance ID implementation

components/gcm_driver/instance_id/instance_id_impl.h

 // Copyright 2015 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_INSTANCE_ID_INSTANCE_ID_IMPL_H_
 #define COMPONENTS_GCM_DRIVER_INSTANCE_ID_INSTANCE_ID_IMPL_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "components/gcm_driver/gcm_client.h"
 #include "components/gcm_driver/gcm_delayed_task_controller.h"
 #include "components/gcm_driver/instance_id/instance_id.h"
 
 namespace gcm {
 class GCMDriver;
 class InstanceIDHandler;
 }  // namespace gcm
 
 namespace instance_id {
 
 // InstanceID implementation for desktop and iOS.
 class InstanceIDImpl : public InstanceID {
  public:
-  InstanceIDImpl(const std::string& app_id, gcm::GCMDriver* gcm_driver);
+  InstanceIDImpl(const std::string& app_id,
+                 bool use_subtype,
+                 gcm::GCMDriver* gcm_driver);
   ~InstanceIDImpl() override;
 
   // InstanceID:
   void GetID(const GetIDCallback& callback) override;
   void GetCreationTime(const GetCreationTimeCallback& callback) override;
   void GetToken(const std::string& authorized_entity,
                 const std::string& scope,
                 const std::map<std::string, std::string>& options,
                 const GetTokenCallback& callback) override;
   void DeleteTokenImpl(const std::string& authorized_entity,
@@ skipping 21 matching lines @@
       const std::string& scope,
       const std::map<std::string, std::string>& options,
       const GetTokenCallback& callback);
   void DoDeleteToken(const std::string& authorized_entity,
                      const std::string& scope,
                      const DeleteTokenCallback& callback);
   void DoDeleteID(const DeleteIDCallback& callback);
 
   gcm::InstanceIDHandler* Handler();
 
+  // Whether to send |app_id| to GCM as a "subtype" instead of a "category".
+  bool use_subtype_;
+
   gcm::GCMDelayedTaskController delayed_task_controller_;
 
   // The generated Instance ID.
   std::string id_;
 
   // The time when the Instance ID has been generated.
   base::Time creation_time_;
 
   base::WeakPtrFactory<InstanceIDImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InstanceIDImpl);
 };
 
 }  // namespace instance_id
 
 #endif  // COMPONENTS_GCM_DRIVER_INSTANCE_ID_INSTANCE_ID_IMPL_H_