remoting: Cleanup class/struct fwd declarations

remoting/protocol/host_control_dispatcher.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_HOST_CONTROL_DISPATCHER_H_
 #define REMOTING_PROTOCOL_HOST_CONTROL_DISPATCHER_H_
 
 #include "base/macros.h"
 #include "remoting/protocol/channel_dispatcher_base.h"
 #include "remoting/protocol/client_stub.h"
 #include "remoting/protocol/clipboard_stub.h"
 #include "remoting/protocol/cursor_shape_stub.h"
 
-namespace net {
-class StreamSocket;
-}  // namespace net
-
 namespace remoting {
 namespace protocol {
 
 class HostStub;
 class PairingResponse;
-class Session;
 
 // HostControlDispatcher dispatches incoming messages on the control
 // channel to HostStub or ClipboardStub, and also implements ClientStub and
 // CursorShapeStub for outgoing messages.
 class HostControlDispatcher : public ChannelDispatcherBase,
                               public ClientStub {
  public:
   HostControlDispatcher();
   ~HostControlDispatcher() override;
 
@@ skipping 25 matching lines @@
   ClipboardStub* clipboard_stub_ = nullptr;
   HostStub* host_stub_ = nullptr;
 
   DISALLOW_COPY_AND_ASSIGN(HostControlDispatcher);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_HOST_CONTROL_DISPATCHER_H_