Cancel any modal UI shown by the RDP control.

remoting/host/win/rdp_client_window.h

 // Copyright (c) 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_WIN_RDP_HOST_WINDOW_H_
 #define REMOTING_HOST_WIN_RDP_HOST_WINDOW_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <atlcrack.h>
 #include <atlctl.h>
 
 #include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "base/win/scoped_comptr.h"
 #include "net/base/ip_endpoint.h"
 #include "third_party/skia/include/core/SkSize.h"
 
 #import "PROGID:MsTscAx.MsTscAx" \
     exclude("wireHWND", "_RemotableHandle", "__MIDL_IWinTypes_0009"), \
     rename_namespace("mstsc") raw_interfaces_only no_implementation
 
 namespace remoting {
@@ skipping 74 matching lines @@
   // Releases the RDP ActiveX control interfaces.
   void OnDestroy();
 
   BEGIN_SINK_MAP(RdpClientWindow)
     SINK_ENTRY_EX(1, __uuidof(mstsc::IMsTscAxEvents), 2, OnConnected)
     SINK_ENTRY_EX(1, __uuidof(mstsc::IMsTscAxEvents), 4, OnDisconnected)
     SINK_ENTRY_EX(1, __uuidof(mstsc::IMsTscAxEvents), 10, OnFatalError)
     SINK_ENTRY_EX(1, __uuidof(mstsc::IMsTscAxEvents), 15, OnConfirmClose)
     SINK_ENTRY_EX(1, __uuidof(mstsc::IMsTscAxEvents), 18,
                   OnAuthenticationWarningDisplayed)
+    SINK_ENTRY_EX(1, __uuidof(mstsc::IMsTscAxEvents), 19,
+                  OnAuthenticationWarningDismissed)
   END_SINK_MAP()
 
   // mstsc::IMsTscAxEvents notifications.
   STDMETHOD(OnAuthenticationWarningDisplayed)();
+  STDMETHOD(OnAuthenticationWarningDismissed)();
   STDMETHOD(OnConnected)();
   STDMETHOD(OnDisconnected)(long reason);
   STDMETHOD(OnFatalError)(long error_code);
   STDMETHOD(OnConfirmClose)(VARIANT_BOOL* allow_close);
 
   // Wrappers for the event handler's methods that make sure that
   // OnDisconnected() is the last notification delivered and is delevered
   // only once.
   void NotifyConnected();
   void NotifyDisconnected();
 
   // Invoked to report connect/disconnect events.
   EventHandler* event_handler_;
 
   // Contains the requested dimensions of the screen.
   SkISize screen_size_;
 
   // The endpoint to connect to.
   net::IPEndPoint server_endpoint_;
 
   // Interfaces exposed by the RDP ActiveX control.
   base::win::ScopedComPtr<mstsc::IMsRdpClient> client_;
   base::win::ScopedComPtr<mstsc::IMsRdpClientAdvancedSettings> client_settings_;
+
+  // Used to cancel modal dialog boxes shown by the RDP control.
+  class WindowHook;
+  scoped_refptr<WindowHook> window_activate_hook_;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_WIN_RDP_HOST_WINDOW_H_