Qualify RuntimeEnabledFeatures.h and remove unnecessary include dir.

Source/modules/device_light/DeviceLightController.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/device_light/DeviceLightController.h"
 
-#include "RuntimeEnabledFeatures.h"
 #include "core/dom/Document.h"
 #include "core/frame/DOMWindow.h"
 #include "core/page/Page.h"
 #include "modules/device_light/DeviceLightDispatcher.h"
 #include "modules/device_light/DeviceLightEvent.h"
+#include "platform/RuntimeEnabledFeatures.h"
 
 namespace WebCore {
 
 DeviceLightController::DeviceLightController(Document& document)
     : DeviceSingleWindowEventController(document)
 {
 }
 
 DeviceLightController::~DeviceLightController()
 {
@@ skipping 41 matching lines @@
     DeviceLightEvent* lightEvent = toDeviceLightEvent(event);
     return lightEvent->value() == std::numeric_limits<double>::infinity();
 }
 
 const AtomicString& DeviceLightController::eventTypeName() const
 {
     return EventTypeNames::devicelight;
 }
 
 } // namespace WebCore