Remove stl_util's STLDeleteContainerPairSecondPointers.

chrome/browser/background/background_application_list_model.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_BACKGROUND_BACKGROUND_APPLICATION_LIST_MODEL_H_
 #define CHROME_BROWSER_BACKGROUND_BACKGROUND_APPLICATION_LIST_MODEL_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 83 matching lines @@
   // Returns true if all startup notifications have already been issued.
   bool is_ready() const {
     return ready_;
   }
 
  private:
   // Contains data associated with a background application that is not
   // represented by the Extension class.
   class Application;
 
-  // Associates extension id strings with Application objects.
-  typedef std::map<std::string, Application*> ApplicationMap;
-
   // Identifies and caches data related to the extension.
   void AssociateApplicationData(const extensions::Extension* extension);
 
   // Clears cached data related to |extension|.
   void DissociateApplicationData(const extensions::Extension* extension);
 
   // Returns the Application associated with |extension| or NULL.
   const Application* FindApplication(
       const extensions::Extension* extension) const;
 
@@ skipping 22 matching lines @@
 
   // Invoked by Observe for NOTIFICATION_EXTENSION_PERMISSIONS_UPDATED.
   void OnExtensionPermissionsUpdated(
       const extensions::Extension* extension,
       extensions::UpdatedExtensionPermissionsInfo::Reason reason,
       const extensions::PermissionSet& permissions);
 
   // Refresh the list of background applications and generate notifications.
   void Update();
 
-  ApplicationMap applications_;
+  // Associates extension id strings with Application objects.
+  std::map<std::string, std::unique_ptr<Application>> applications_;
+
   extensions::ExtensionList extensions_;
   base::ObserverList<Observer, true> observers_;
   Profile* profile_;
   content::NotificationRegistrar registrar_;
   bool ready_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundApplicationListModel);
 };
 
 #endif  // CHROME_BROWSER_BACKGROUND_BACKGROUND_APPLICATION_LIST_MODEL_H_