Unbreak tabs.onRemove extension API in face of fast tab closure

chrome/browser/automation/automation_provider_observers.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_AUTOMATION_AUTOMATION_PROVIDER_OBSERVERS_H_
 #define CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_OBSERVERS_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 299 matching lines @@
  public:
   TabCountChangeObserver(AutomationProvider* automation,
                          Browser* browser,
                          IPC::Message* reply_message,
                          int target_tab_count);
   // Implementation of TabStripModelObserver.
   virtual void TabInsertedAt(content::WebContents* contents,
                              int index,
                              bool foreground) OVERRIDE;
   virtual void TabDetachedAt(content::WebContents* contents,
-                             int index) OVERRIDE;
+                             int index,
+                             bool closing_all) OVERRIDE;
   virtual void TabStripModelDeleted() OVERRIDE;
 
  private:
   virtual ~TabCountChangeObserver();
 
   // Checks if the current tab count matches our target, and if so,
   // sends the reply message and deletes self.
   void CheckTabCount();
 
   base::WeakPtr<AutomationProvider> automation_;
@@ skipping 1344 matching lines @@
   base::WeakPtr<AutomationProvider> automation_;
   scoped_ptr<IPC::Message> reply_message_;
   int new_window_id_;
   int num_loads_;
 
   DISALLOW_COPY_AND_ASSIGN(
       BrowserOpenedWithExistingProfileNotificationObserver);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_OBSERVERS_H_