battery-status: Implement the battery-status API for chromeos.

content/browser/battery_status/battery_status_service.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 "content/browser/battery_status/battery_status_service.h"
 
 #include "base/bind.h"
 #include "content/browser/battery_status/battery_status_manager.h"
 #include "content/public/browser/browser_thread.h"
 
@@ skipping 16 matching lines @@
   return Singleton<BatteryStatusService,
                    LeakySingletonTraits<BatteryStatusService> >::get();
 }
 
 scoped_ptr<BatteryStatusService::BatteryUpdateSubscription>
 BatteryStatusService::AddCallback(const BatteryUpdateCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(!is_shutdown_);
 
   if (!battery_fetcher_)
-    battery_fetcher_.reset(new BatteryStatusManager(update_callback_));
+    battery_fetcher_ = BatteryStatusManager::Create(update_callback_);
 
   if (callback_list_.empty()) {
     bool success = battery_fetcher_->StartListeningBatteryChange();
     if (!success) {
         // Make sure the promise resolves with the default values in Blink.
         callback.Run(blink::WebBatteryStatus());
     }
   }
 
   if (status_updated_) {
@@ skipping 49 matching lines @@
 
 void BatteryStatusService::SetBatteryManagerForTesting(
     BatteryStatusManager* test_battery_manager) {
   battery_fetcher_.reset(test_battery_manager);
   blink::WebBatteryStatus status;
   status_ = status;
   status_updated_ = false;
 }
 
 }  // namespace content