Replace deprecated base::NonThreadSafe in extensions/browser/api/cast_channel in favor of SequenceC…

extensions/browser/api/cast_channel/cast_transport.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_TRANSPORT_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_TRANSPORT_H_
 
 #include <queue>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "base/threading/thread_checker.h"
 #include "extensions/browser/api/cast_channel/logger.h"
 #include "extensions/common/api/cast_channel.h"
 #include "extensions/common/api/cast_channel/logging.pb.h"
 #include "net/base/completion_callback.h"
 #include "net/base/ip_endpoint.h"
 
 namespace net {
 class DrainableIOBuffer;
 class DrainableIOBuffer;
@@ skipping 41 matching lines @@
   virtual void Start() = 0;
 
   // Changes the delegate for processing read events. Pending reads remain
   // in-flight.
   // Ownership of the pointee of |delegate| is assumed by the transport.
   // Prior delegates are deleted automatically.
   virtual void SetReadDelegate(std::unique_ptr<Delegate> delegate) = 0;
 };
 
 // Manager class for reading and writing messages to/from a socket.
-class CastTransportImpl : public CastTransport, public base::NonThreadSafe {
+class CastTransportImpl : public CastTransport {
  public:
   // Adds a CastMessage read/write layer to a socket.
   // Message read events are propagated to the owner via |read_delegate|.
   // |vlog_prefix| sets the prefix used for all VLOGged output.
   // |socket| and |logger| must all out-live the
   // CastTransportImpl instance.
   // |read_delegate| is owned by this CastTransportImpl object.
   CastTransportImpl(net::Socket* socket,
                     int channel_id,
                     const net::IPEndPoint& ip_endpoint_,
@@ skipping 122 matching lines @@
 
   // IP address of the remote end.
   const net::IPEndPoint ip_endpoint_;
 
   // Authentication level for the connection.
   ChannelAuthType channel_auth_;
 
   // Accumulates details of events and errors, for debugging purposes.
   scoped_refptr<Logger> logger_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(CastTransportImpl);
 };
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_TRANSPORT_H_