Persist Instance ID data to GCM store.

chrome/browser/extensions/api/instance_id/instance_id_api.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 CHROME_BROWSER_EXTENSIONS_API_INSTANCE_ID_INSTANCE_ID_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_INSTANCE_ID_INSTANCE_ID_API_H_
 
 #include "base/macros.h"
 #include "components/gcm_driver/instance_id/instance_id.h"
 #include "extensions/browser/extension_function.h"
@@ skipping 29 matching lines @@
 
   InstanceIDGetIDFunction();
 
  protected:
   ~InstanceIDGetIDFunction() override;
 
   // InstanceIDApiFunction:
   ResponseAction DoWork() override;
 
  private:
+  void GetIDCompleted(const std::string& id);
+
   DISALLOW_COPY_AND_ASSIGN(InstanceIDGetIDFunction);
 };
 
 class InstanceIDGetCreationTimeFunction : public InstanceIDApiFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("instanceID.getCreationTime",
                              INSTANCEID_GETCREATIONTIME);
 
   InstanceIDGetCreationTimeFunction();
 
  protected:
   ~InstanceIDGetCreationTimeFunction() override;
 
   // InstanceIDApiFunction:
   ResponseAction DoWork() override;
 
  private:
+  void GetCreationTimeCompleted(const base::Time& creation_time);
+
   DISALLOW_COPY_AND_ASSIGN(InstanceIDGetCreationTimeFunction);
 };
 
 class InstanceIDGetTokenFunction : public InstanceIDApiFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("instanceID.getToken", INSTANCEID_GETTOKEN);
 
   InstanceIDGetTokenFunction();
 
  protected:
@@ skipping 42 matching lines @@
 
  private:
   void DeleteIDCompleted(instance_id::InstanceID::Result result);
 
   DISALLOW_COPY_AND_ASSIGN(InstanceIDDeleteIDFunction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_INSTANCE_ID_INSTANCE_ID_API_H_