Implement DeviceLight

Source/web/FrameLoaderClientImpl.cpp

Index: Source/web/FrameLoaderClientImpl.cpp
diff --git a/Source/web/FrameLoaderClientImpl.cpp b/Source/web/FrameLoaderClientImpl.cpp
index 8cdf3ebcc1b5da2e7c7f3d9fbec2203351d7f057..3b85800a8432216e050409887061ea520e846f08 100644
--- a/Source/web/FrameLoaderClientImpl.cpp
+++ b/Source/web/FrameLoaderClientImpl.cpp
@@ -72,6 +72,7 @@
 #include "core/frame/Settings.h"
 #include "core/page/WindowFeatures.h"
 #include "core/rendering/HitTestResult.h"
+#include "modules/device_light/DeviceLightController.h"
 #include "modules/device_orientation/DeviceMotionController.h"
 #include "modules/device_orientation/DeviceOrientationController.h"
 #include "modules/screen_orientation/ScreenOrientationController.h"
@@ -117,6 +118,8 @@ void FrameLoaderClientImpl::dispatchDidClearWindowObjectInWorld(DOMWrapperWorld*
         Document* document = m_webFrame->frame()->document();
         if (document) {
             WheelController::from(*document);
+            if (RuntimeEnabledFeatures::deviceLightEnabled())
+                DeviceLightController::from(*document);
             if (RuntimeEnabledFeatures::deviceMotionEnabled())
                 DeviceMotionController::from(*document);
             if (RuntimeEnabledFeatures::deviceOrientationEnabled())