Cleanup: Remove unneeded forward declarations from remoting.

remoting/protocol/protocol_mock_objects.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_PROTOCOL_MOCK_OBJECTS_H_
 #define REMOTING_PROTOCOL_PROTOCOL_MOCK_OBJECTS_H_
 
+#include <string>
+
 #include "remoting/proto/internal.pb.h"
 #include "remoting/protocol/client_stub.h"
 #include "remoting/protocol/connection_to_client.h"
 #include "remoting/protocol/host_stub.h"
 #include "remoting/protocol/input_stub.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/video_stub.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace remoting {
 namespace protocol {
 
-class ChromotocolConnection;
-
 class MockConnectionToClient : public ConnectionToClient {
  public:
   MockConnectionToClient(Session* session,
                          HostStub* host_stub,
                          InputStub* input_stub);
   virtual ~MockConnectionToClient();
 
   MOCK_METHOD1(Init, void(Session* session));
   MOCK_METHOD0(video_stub, VideoStub*());
   MOCK_METHOD0(client_stub, ClientStub*());
@@ skipping 93 matching lines @@
   MOCK_METHOD0(Close, void());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockSession);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_PROTOCOL_MOCK_OBJECTS_H_