Replace more ObserverList with base::ObserverList.

chromeos/disks/disk_mount_manager.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 "chromeos/disks/disk_mount_manager.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 592 matching lines @@
          it != system_path_prefixes_.end();
          ++it) {
       const std::string& prefix = *it;
       if (StartsWithASCII(system_path, prefix, true))
         return prefix;
     }
     return base::EmptyString();
   }
 
   // Mount event change observers.
-  ObserverList<Observer> observers_;
+  base::ObserverList<Observer> observers_;
 
   CrosDisksClient* cros_disks_client_;
 
   // The list of disks found.
   DiskMountManager::DiskMap disks_;
 
   DiskMountManager::MountPointMap mount_points_;
 
   typedef std::set<std::string> SystemPathPrefixSet;
   SystemPathPrefixSet system_path_prefixes_;
@@ skipping 123 matching lines @@
   VLOG(1) << "DiskMountManager Shutdown completed";
 }
 
 // static
 DiskMountManager* DiskMountManager::GetInstance() {
   return g_disk_mount_manager;
 }
 
 }  // namespace disks
 }  // namespace chromeos