Adds views::corewm::WMState to install common state

chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_CHROME_BROWSER_MAIN_EXTRA_PARTS_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_CHROME_BROWSER_MAIN_EXTRA_PARTS_VIEWS_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chrome_browser_main_extra_parts.h"
 
+#if defined(USE_AURA)
+namespace views {
+namespace corewm {
+class WMState;
+}
+}
+#endif
+
 class ChromeBrowserMainExtraPartsViews : public ChromeBrowserMainExtraParts {
  public:
   ChromeBrowserMainExtraPartsViews();
+  virtual ~ChromeBrowserMainExtraPartsViews();
 
   // Overridden from ChromeBrowserMainExtraParts:
   virtual void ToolkitInitialized() OVERRIDE;
 
  private:
+#if defined(USE_AURA)
+  scoped_ptr<views::corewm::WMState> wm_state_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_CHROME_BROWSER_MAIN_EXTRA_PARTS_VIEWS_H_