Made DesktopEnvironment responsible for creation of the disconnect window.

remoting/host/host_window_proxy.h

Index: remoting/host/host_window_proxy.h
diff --git a/remoting/host/host_window_proxy.h b/remoting/host/host_window_proxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..da6add8d273796f50620856942292ce3c96ee014
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+++ b/remoting/host/host_window_proxy.h
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+// Copyright 2013 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_HOST_HOST_WINDOW_PROXY_H_
+#define REMOTING_HOST_HOST_WINDOW_PROXY_H_
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "remoting/host/host_window.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace remoting {
+
+// Takes an instance of |HostWindow| and runs it on the |ui_task_runner| thread.
+class HostWindowProxy : public HostWindow {
+ public:
+  HostWindowProxy(
+      scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
+      scoped_ptr<HostWindow> host_window);
+  virtual ~HostWindowProxy();
+
+  // HostWindow overrides.
+  virtual void Start(
+      const base::WeakPtr<ClientSessionControl>& client_session_control)
+      OVERRIDE;
+
+ private:
+  // All thread switching logic is implemented in the ref-counted |Core| class.
+  class Core;
+  scoped_refptr<Core> core_;
+
+  DISALLOW_COPY_AND_ASSIGN(HostWindowProxy);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_HOST_WINDOW_PROXY_H_