Added browser test for Captive Portal window ctor and dtor.

chrome/browser/chromeos/login/captive_portal_window_proxy.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_CHROMEOS_LOGIN_CAPTIVE_PORTAL_WINDOW_PROXY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_CAPTIVE_PORTAL_WINDOW_PROXY_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/views/widget/widget_observer.h"
@@ skipping 45 matching lines @@
   // Called by CaptivePortalView when URL loading was redirected from the
   // original URL.
   void OnRedirected();
 
   // Called by CaptivePortalView when origin URL is loaded without any
   // redirections.
   void OnOriginalURLLoaded();
 
   // Overridden from views::WidgetObserver:
   virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE;
+  virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
+  virtual void OnWidgetDestroyed(views::Widget* widget) OVERRIDE;
 
  private:
   friend class CaptivePortalWindowTest;
 
   // Possible transitions between states:
   //
   // wp(ShowIfRedirected(), WAITING_FOR_REDIRECTION) = IDLE
   // wp(Show(), DISPLAYED) = IDLE | WAITING_FOR_REDIRECTION
   // wp(Close(), IDLE) = WAITING_FOR_REDIRECTION | DISPLAYED
   // wp(OnRedirected(), DISPLAYED) = WAITING_FOR_REDIRECTION
   // wp(OnOriginalURLLoaded(), IDLE) = WAITING_FOR_REDIRECTION | DISPLAYED
   //
   // where wp(E, S) is a weakest precondition (initial state) such
   // that after execution of E the system will be surely in the state S.
   enum State {
     STATE_IDLE = 0,
     STATE_WAITING_FOR_REDIRECTION,
     STATE_DISPLAYED,
     STATE_UNKNOWN
   };
 
   // Initializes |captive_portal_view_| if it is not initialized and
   // starts loading Captive Portal redirect URL.
   void InitCaptivePortalView();
 
   // Returns symbolic state name based on internal state.
   State GetState() const;
 
+  // When |widget| is not NULL and the same as |widget_| stops to observe
+  // notifications from |widget_| and resets it.
+  void DetachFromWidget(views::Widget* widget);
+
   // Not owned by this class.
   Delegate* delegate_;
   // Not owned by this class.
   views::Widget* widget_;
   scoped_ptr<CaptivePortalView> captive_portal_view_;
 
   // Not owned by this class.
   content::WebContents* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(CaptivePortalWindowProxy);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_CAPTIVE_PORTAL_WINDOW_PROXY_H_