Only include NotImplemented.h when it is actually used (when notImplemented() is called).

Source/modules/battery/BatteryDispatcher.cpp

 // 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 "config.h"
 #include "modules/battery/BatteryDispatcher.h"
 
 #include "modules/battery/BatteryStatus.h"
-#include "platform/NotImplemented.h"
 #include "public/platform/Platform.h"
 
 namespace blink {
 
 BatteryDispatcher& BatteryDispatcher::instance()
 {
     DEFINE_STATIC_LOCAL(Persistent<BatteryDispatcher>, batteryDispatcher, (new BatteryDispatcher()));
     return *batteryDispatcher;
 }
 
@@ skipping 27 matching lines @@
     Platform::current()->startListening(WebPlatformEventBattery, this);
 }
 
 void BatteryDispatcher::stopListening()
 {
     Platform::current()->stopListening(WebPlatformEventBattery);
     m_batteryStatus.clear();
 }
 
 } // namespace blink