Update ConstrainedWindowViews appearance according to mock

chrome/browser/ui/constrained_window_tab_helper_delegate.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_CONSTRAINED_WINDOW_TAB_HELPER_DELEGATE_H_
 #define CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_DELEGATE_H_
 
 namespace content {
 class WebContents;
 }
+class BrowserWindow;
 
 class ConstrainedWindowTabHelperDelegate {
  public:
   // Returns true if constrained windows should be focused. Default is true.
   virtual bool ShouldFocusConstrainedWindow();
 
   // Changes the blocked state of |tab_contents|. WebContentses are considered
   // blocked while displaying a tab modal dialog. During that time renderer host
   // will ignore any UI interaction within WebContents outside of the
   // currently displaying dialog.
   virtual void SetTabContentBlocked(content::WebContents* web_contents,
                                     bool blocked);
 
+  // Returns the window for this Browser.
+  virtual BrowserWindow* GetBrowserWindow();
+
  protected:
   virtual ~ConstrainedWindowTabHelperDelegate();
 };
 
 #endif  // CHROME_BROWSER_UI_CONSTRAINED_WINDOW_TAB_HELPER_DELEGATE_H_