Cleanup: Remove unneeded forward declarations from remoting.

remoting/protocol/pepper_transport_socket_adapter.h

 // Copyright (c) 2011 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_PEPPER_TRANSPORT_SOCKET_ADAPTER_H_
 #define REMOTING_PROTOCOL_PEPPER_TRANSPORT_SOCKET_ADAPTER_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/net_log.h"
 #include "net/socket/stream_socket.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/cpp/completion_callback.h"
 
 namespace pp {
-class Instance;
 class Transport_Dev;
 }  // namespace pp
 
 namespace remoting {
 namespace protocol {
 
 // This class implements net::StreamSocket interface on top of the the
 // Pepper P2P Transport API.
 class PepperTransportSocketAdapter : public base::NonThreadSafe,
                                      public net::StreamSocket {
@@ skipping 70 matching lines @@
 
   pp::CompletionCallbackFactory<PepperTransportSocketAdapter> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperTransportSocketAdapter);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_PEPPER_TRANSPORT_SOCKET_ADAPTER_H_