Add TabStripModel as a parameter of some functions in TabStripModelObserver

chrome/browser/devtools/devtools_auto_opener.h

 // Copyright 2016 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_DEVTOOLS_DEVTOOLS_AUTO_OPENER_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_AUTO_OPENER_H_
 
 #include "chrome/browser/ui/browser_tab_strip_tracker.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 
 class DevToolsAutoOpener : public TabStripModelObserver {
  public:
   DevToolsAutoOpener();
   ~DevToolsAutoOpener() override;
 
  private:
   // TabStripModelObserver overrides.
-  void TabInsertedAt(content::WebContents* contents,
+  void TabInsertedAt(TabStripModel* tab_strip_model,
+                     content::WebContents* contents,
                      int index,
                      bool foreground) override;
 
   BrowserTabStripTracker browser_tab_strip_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsAutoOpener);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_AUTO_OPENER_H_