Linux/ChromeOS Chromium style checker cleanup, chrome/browser edition.

chrome/browser/media_gallery/media_file_system_registry.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.
 
 // MediaFileSystemRegistry implementation.
 
 #include "chrome/browser/media_gallery/media_file_system_registry.h"
 
 #include <set>
 #include <vector>
@@ skipping 89 matching lines @@
 // interested in. Once all of the RPHs have closed or been terminated a call
 // back informs the caller.
 class RPHReferenceManager : public content::NotificationObserver {
  public:
   // |no_references_callback| is called when the last RenderViewHost reference
   // goes away. RenderViewHost references are added through ReferenceFromRVH().
   explicit RPHReferenceManager(const base::Closure& no_references_callback)
       : no_references_callback_(no_references_callback) {
   }
 
-  ~RPHReferenceManager() {
+  virtual ~RPHReferenceManager() {
     Reset();
   }
 
   // Remove all references, but don't call |no_references_callback|.
   void Reset() {
     STLDeleteValues(&refs_);
   }
 
   // Returns true if there are no references;
   bool empty() const {
@@ skipping 686 matching lines @@
 
     PrefChangeRegistrarMap::iterator pref_it =
         pref_change_registrar_map_.find(profile);
     DCHECK(pref_it != pref_change_registrar_map_.end());
     delete pref_it->second;
     pref_change_registrar_map_.erase(pref_it);
   }
 }
 
 }  // namespace chrome