Make WebContentsObserver::web_contents() public

chrome/browser/ui/tabs/tab_strip_model.cc

 // 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.
 
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 
 #include <algorithm>
 #include <map>
 #include <string>
 
@@ skipping 50 matching lines @@
   WebContents* Next();
 
  private:
   class DeletionObserver : public content::WebContentsObserver {
    public:
     DeletionObserver(CloseTracker* parent, WebContents* web_contents)
         : WebContentsObserver(web_contents),
           parent_(parent) {
     }
 
-    // Expose web_contents() publicly.
-    using content::WebContentsObserver::web_contents;
-
    private:
     // WebContentsObserver:
     virtual void WebContentsDestroyed() OVERRIDE {
       parent_->OnWebContentsDestroyed(this);
     }
 
     CloseTracker* parent_;
 
     DISALLOW_COPY_AND_ASSIGN(DeletionObserver);
   };
@@ skipping 1324 matching lines @@
 void TabStripModel::ForgetOpenersAndGroupsReferencing(
     const WebContents* tab) {
   for (WebContentsDataVector::const_iterator i = contents_data_.begin();
        i != contents_data_.end(); ++i) {
     if ((*i)->group() == tab)
       (*i)->set_group(NULL);
     if ((*i)->opener() == tab)
       (*i)->set_opener(NULL);
   }
 }