Allow ChromeOS file selection dialog to be shown from shell windows.

chrome/browser/extensions/shell_window_registry.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_EXTENSIONS_SHELL_WINDOW_REGISTRY_H_
 #define CHROME_BROWSER_EXTENSIONS_SHELL_WINDOW_REGISTRY_H_
 #pragma once
 
 #include <set>
 
 #include "base/compiler_specific.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/profiles/profile_keyed_service_factory.h"
+#include "ui/gfx/native_widget_types.h"
 
 class Profile;
 class ShellWindow;
 
 namespace content {
 class RenderViewHost;
 }
 
 // The ShellWindowRegistry tracks the ShellWindows for all platform apps for a
 // particular profile.
@@ skipping 28 matching lines @@
   void AddShellWindow(ShellWindow* shell_window);
   void RemoveShellWindow(ShellWindow* shell_window);
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Returns a set of windows owned by the application identified by app_id.
   ShellWindowSet GetShellWindowsForApp(const std::string app_id) const;
   const ShellWindowSet& shell_windows() const { return shell_windows_; }
 
+  // Helper functions to find shell windows with particular attributes.
   ShellWindow* GetShellWindowForRenderViewHost(
       content::RenderViewHost* render_view_host) const;
+  ShellWindow* GetShellWindowForNativeWindow(gfx::NativeWindow window) const;
 
  private:
   class Factory : public ProfileKeyedServiceFactory {
    public:
     static ShellWindowRegistry* GetForProfile(Profile* profile);
 
     static Factory* GetInstance();
    private:
     friend struct DefaultSingletonTraits<Factory>;
 
     Factory();
     virtual ~Factory();
 
     // ProfileKeyedServiceFactory
     virtual ProfileKeyedService* BuildServiceInstanceFor(
         Profile* profile) const OVERRIDE;
     virtual bool ServiceIsCreatedWithProfile() OVERRIDE;
     virtual bool ServiceIsNULLWhileTesting() OVERRIDE;
   };
 
   ShellWindowSet shell_windows_;
   ObserverList<Observer> observers_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SHELL_WINDOW_REGISTRY_H_