Quickly close tabs/window with long-running unload handlers.

chrome/browser/ui/browser.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_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 282 matching lines @@
   string16 GetWindowTitleForCurrentTab() const;
 
   // Prepares a title string for display (removes embedded newlines, etc).
   static void FormatTitleForDisplay(string16* title);
 
   // OnBeforeUnload handling //////////////////////////////////////////////////
 
   // Gives beforeunload handlers the chance to cancel the close.
   bool ShouldCloseWindow();
 
+  // Figure out if there are tabs that have beforeunload handlers.
+  // It starts beforeunload/unload processing as a side-effect.
+  bool TabsNeedBeforeUnloadFired();
+
   bool IsAttemptingToCloseBrowser() const;
 
   // Invoked when the window containing us is closing. Performs the necessary
   // cleanup.
   void OnWindowClosing();
 
+  // Called when all unload processing completes so the browser can close.
+  void OnUnloadProcessingCompleted();
+
   // OnWindowActivationChanged handling ///////////////////////////////////////
 
   // Invoked when the window containing us is activated.
   void OnWindowActivated();
 
   // In-progress download termination handling /////////////////////////////////
 
   // Called when the user has decided whether to proceed or not with the browser
   // closure.  |cancel_downloads| is true if the downloads should be canceled
   // and the browser closed, false if the browser should stay open and the
@@ skipping 134 matching lines @@
 
   // Overridden from content::WebContentsDelegate:
   virtual bool PreHandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event,
       bool* is_keyboard_shortcut) OVERRIDE;
   virtual void HandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event) OVERRIDE;
 
-  // Figure out if there are tabs that have beforeunload handlers.
-  bool TabsNeedBeforeUnloadFired();
-
   bool is_type_tabbed() const { return type_ == TYPE_TABBED; }
   bool is_type_popup() const { return type_ == TYPE_POPUP; }
   bool is_type_panel() const { return type_ == TYPE_PANEL; }
 
   bool is_app() const;
   bool is_devtools() const;
 
   // True when the mouse cursor is locked.
   bool IsMouseLocked() const;
 
@@ skipping 475 matching lines @@
   bool window_has_shown_;
 
   // Currently open color chooser. Non-NULL after OpenColorChooser is called and
   // before DidEndColorChooser is called.
   scoped_ptr<content::ColorChooser> color_chooser_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_