Makes sure that an input method doesn't reference to a destroyed object.

content/browser/renderer_host/render_widget_host_view_win.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_win.h"
 
 #include <InputScope.h>
 #include <wtsapi32.h>
 #pragma comment(lib, "wtsapi32.lib")
 
@@ skipping 791 matching lines @@
   UpdateCursorIfOverSelf();
   Destroy();
 }
 
 bool RenderWidgetHostViewWin::CanSubscribeFrame() const {
   return render_widget_host_ != NULL;
 }
 
 void RenderWidgetHostViewWin::WillWmDestroy() {
   CleanupCompositorWindow();
-  if (base::win::IsTSFAwareRequired() && GetFocus() == m_hWnd)
+  if (base::win::IsTSFAwareRequired())
     ui::TSFBridge::GetInstance()->RemoveFocusedClient(this);
 }
 
 void RenderWidgetHostViewWin::Destroy() {
   // We've been told to destroy.
   // By clearing close_on_deactivate_, we prevent further deactivations
   // (caused by windows messages resulting from the DestroyWindow) from
   // triggering further destructions.  The deletion of this is handled by
   // OnFinalMessage();
   close_on_deactivate_ = false;
@@ skipping 2376 matching lines @@
   return new RenderWidgetHostViewWin(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(
       WebKit::WebScreenInfo* results) {
   GetScreenInfoForWindow(0, results);
 }
 
 }  // namespace content