Showing Task manager on the foreground window.

chrome/browser/ui/gtk/browser_window_gtk.h

 // Copyright (c) 2011 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_GTK_BROWSER_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 89 matching lines @@
   virtual void ShowUpdateChromeDialog();
   virtual void ShowTaskManager();
   virtual void ShowBackgroundPages();
   virtual void ShowBookmarkBubble(const GURL& url, bool already_bookmarked);
   virtual bool IsDownloadShelfVisible() const;
   virtual DownloadShelf* GetDownloadShelf();
   virtual void ShowRepostFormWarningDialog(TabContents* tab_contents);
   virtual void ShowCollectedCookiesDialog(TabContents* tab_contents);
   virtual void ShowThemeInstallBubble();
   virtual void ConfirmBrowserCloseWithPendingDownloads();
-  virtual void ShowHTMLDialog(HtmlDialogUIDelegate* delegate,
-                              gfx::NativeWindow parent_window);
+  virtual gfx::NativeWindow ShowHTMLDialog(HtmlDialogUIDelegate* delegate,
+                                           gfx::NativeWindow parent_window);
   virtual void UserChangedTheme();
   virtual int GetExtraRenderViewHeight() const;
   virtual void TabContentsFocused(TabContents* tab_contents);
   virtual void ShowPageInfo(Profile* profile,
                             const GURL& url,
                             const NavigationEntry::SSLStatus& ssl,
                             bool show_history);
   virtual void ShowAppMenu();
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                       bool* is_keyboard_shortcut);
@@ skipping 386 matching lines @@
   // be called. This should only be enabled in tests where the debounce timeout
   // introduces timing issues (e.g. in OmniBoxApiTest it dismisses the
   // autocomplete popup before the results can be read) and the final window
   // position is unimportant.
   bool debounce_timer_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_