Deprecate NonThreadSafe in remoting in favor of SequenceChecker.

remoting/protocol/message_reader.h

 // Copyright (c) 2012 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_PROTOCOL_MESSAGE_READER_H_
 #define REMOTING_PROTOCOL_MESSAGE_READER_H_
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "remoting/base/compound_buffer.h"
 #include "remoting/protocol/message_decoder.h"
 
 namespace net {
 class IOBuffer;
 }  // namespace net
 
 namespace remoting {
 namespace protocol {
 
 class P2PStreamSocket;
 
 // MessageReader reads data from the socket asynchronously and calls
 // callback for each message it receives. It stops calling the
 // callback as soon as the socket is closed, so the socket should
 // always be closed before the callback handler is destroyed.
 //
 // In order to throttle the stream, MessageReader doesn't try to read
 // new data from the socket until all previously received messages are
 // processed by the receiver (|done_task| is called for each message).
 // It is still possible that the MessageReceivedCallback is called
 // twice (so that there is more than one outstanding message),
 // e.g. when we the sender sends multiple messages in one TCP packet.
-class MessageReader : public base::NonThreadSafe {
+class MessageReader {
  public:
   typedef base::Callback<void(std::unique_ptr<CompoundBuffer> message)>
       MessageReceivedCallback;
   typedef base::Callback<void(int)> ReadFailedCallback;
 
   MessageReader();
   virtual ~MessageReader();
 
   // Starts reading from |socket|.
   void StartReading(P2PStreamSocket* socket,
@@ skipping 16 matching lines @@
   bool read_pending_ = false;
 
   bool closed_ = false;
   scoped_refptr<net::IOBuffer> read_buffer_;
 
   MessageDecoder message_decoder_;
 
   // Callback is called when a message is received.
   MessageReceivedCallback message_received_callback_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   base::WeakPtrFactory<MessageReader> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageReader);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_MESSAGE_READER_H_