Introduce a fake HostStub since there's no need to handle it now

remoting/host/host_stub_fake.h

+// Copyright (c) 2010 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.
+
+// A fake HostStub implementation that does not do anything.
+
+#ifndef REMOTING_PROTOCOL_HOST_STUB_FAKE_H_
+#define REMOTING_PROTOCOL_HOST_STUB_FAKE_H_
+
+#include "base/basictypes.h"
+#include "remoting/protocol/host_stub.h"
+
+namespace remoting {
+
+class HostStubFake : public protocol::HostStub {
+ public:
+  HostStubFake() {}
+  virtual ~HostStubFake() {}
+
+  virtual void SuggestResolution(
+      const protocol::SuggestResolutionRequest* msg, Task* done);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(HostStubFake);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_HOST_STUB_FAKE_H_