It2Me native messaging: GYP and source refactoring

remoting/host/setup/native_messaging_reader.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_SETUP_NATIVE_MESSAGING_READER_H_
-#define REMOTING_HOST_SETUP_NATIVE_MESSAGING_READER_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/platform_file.h"
-#include "base/threading/thread.h"
-
-namespace base {
-class SequencedTaskRunner;
-class Value;
-}  // namespace base
-
-namespace net {
-class FileStream;
-}  // namespace net
-
-namespace remoting {
-
-// This class is used for reading messages from the Native Messaging client
-// webapp.
-class NativeMessagingReader {
- public:
-  typedef base::Callback<void(scoped_ptr<base::Value>)> MessageCallback;
-
-  explicit NativeMessagingReader(base::PlatformFile handle);
-  ~NativeMessagingReader();
-
-  // Begin reading messages from the Native Messaging client webapp, calling
-  // |message_callback| for each received message, or |eof_callback| if
-  // EOF or error is encountered. This method is asynchronous - the callbacks
-  // will be run on the same thread via PostTask. The caller should be prepared
-  // for these callbacks to be invoked right up until this object is destroyed.
-  void Start(MessageCallback message_callback, base::Closure eof_callback);
-
- private:
-  class Core;
-  friend class Core;
-
-  // Wrappers posted to by the read thread to trigger the message and EOF
-  // callbacks on the caller thread, and have them safely dropped if the reader
-  // has been deleted before they are processed.
-  void InvokeMessageCallback(scoped_ptr<base::Value> message);
-  void InvokeEofCallback();
-
-  // Holds the information that the read thread needs to access, such as the
-  // FileStream, and the TaskRunner used for posting notifications back to this
-  // class.
-  scoped_ptr<Core> core_;
-
-  // Caller-supplied message and end-of-file callbacks.
-  MessageCallback message_callback_;
-  base::Closure eof_callback_;
-
-  // Separate thread used to read from the stream without blocking the main
-  // thread. net::FileStream's async API cannot be used here because, on
-  // Windows, it requires the file handle to have been opened for overlapped IO.
-  base::Thread reader_thread_;
-  scoped_refptr<base::SequencedTaskRunner> read_task_runner_;
-
-  // Allows the reader to be deleted safely even when tasks may be pending on
-  // it.
-  base::WeakPtrFactory<NativeMessagingReader> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeMessagingReader);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_SETUP_NATIVE_MESSAGING_READER_H_