Refactoring Me2MeNativeMessagingHost to implement NativeMessageHost interface

remoting/host/it2me/it2me_native_messaging_host.h

 // Copyright 2013 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 REMOTING_HOST_IT2ME_IT2ME_NATIVE_MESSAGING_HOST_H_
 #define REMOTING_HOST_IT2ME_IT2ME_NATIVE_MESSAGING_HOST_H_
 
 #include <memory>
+#include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
 #include "extensions/browser/api/messaging/native_message_host.h"
-#include "remoting/base/auto_thread_task_runner.h"
-#include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/it2me/it2me_host.h"
 
 #if !defined(OS_CHROMEOS)
 #include "remoting/host/native_messaging/log_message_handler.h"
 #endif
 
 namespace base {
 class DictionaryValue;
 class Value;
+class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace remoting {
 
+class ChromotingHostContext;
+
 // Implementation of the native messaging host process.
 class It2MeNativeMessagingHost : public It2MeHost::Observer,
                                  public extensions::NativeMessageHost {
  public:
   It2MeNativeMessagingHost(std::unique_ptr<ChromotingHostContext> host_context,
                            std::unique_ptr<It2MeHostFactory> host_factory);
   ~It2MeNativeMessagingHost() override;
 
   // extensions::NativeMessageHost implementation.
   void OnMessage(const std::string& message) override;
   void Start(Client* client) override;
-  scoped_refptr<base::SingleThreadTaskRunner> task_runner()
-      const override;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner() const override;
 
   // It2MeHost::Observer implementation.
   void OnClientAuthenticated(const std::string& client_username)
       override;
   void OnStoreAccessCode(const std::string& access_code,
                                  base::TimeDelta access_code_lifetime) override;
   void OnNatPolicyChanged(bool nat_traversal_enabled) override;
   void OnStateChanged(It2MeHostState state,
                       const std::string& error_message) override;
 
@@ skipping 38 matching lines @@
 
   base::WeakPtr<It2MeNativeMessagingHost> weak_ptr_;
   base::WeakPtrFactory<It2MeNativeMessagingHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(It2MeNativeMessagingHost);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_IT2ME_IT2ME_NATIVE_MESSAGING_HOST_H_