Replace more ObserverList with base::ObserverList.

components/storage_monitor/storage_monitor.cc

 // Copyright 2014 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 "components/storage_monitor/storage_monitor.h"
 
 #include "base/stl_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/storage_monitor/removable_storage_observer.h"
 #include "components/storage_monitor/transient_device_ids.h"
@@ skipping 116 matching lines @@
 
 void StorageMonitor::EjectDevice(
     const std::string& device_id,
     base::Callback<void(EjectStatus)> callback) {
   // Platform-specific implementations will override this method to
   // perform actual device ejection.
   callback.Run(EJECT_FAILURE);
 }
 
 StorageMonitor::StorageMonitor()
-    : observer_list_(new ObserverListThreadSafe<RemovableStorageObserver>()),
+    : observer_list_(
+          new base::ObserverListThreadSafe<RemovableStorageObserver>()),
       initializing_(false),
       initialized_(false),
       transient_device_ids_(new TransientDeviceIds) {
   receiver_.reset(new ReceiverImpl(this));
 }
 
 StorageMonitor::~StorageMonitor() {
 }
 
 StorageMonitor::Receiver* StorageMonitor::receiver() const {
@@ skipping 40 matching lines @@
   }
 
   DVLOG(1) << "StorageDetached for id " << id;
   if (StorageInfo::IsRemovableDevice(info.device_id())) {
     observer_list_->Notify(
         FROM_HERE, &RemovableStorageObserver::OnRemovableStorageDetached, info);
   }
 }
 
 }  // namespace storage_monitor