Implement DeviceLight

LayoutTests/fast/dom/DeviceLight/script-tests/create-event.js

Index: LayoutTests/fast/dom/DeviceLight/script-tests/create-event.js
diff --git a/LayoutTests/fast/dom/DeviceLight/script-tests/create-event.js b/LayoutTests/fast/dom/DeviceLight/script-tests/create-event.js
new file mode 100644
index 0000000000000000000000000000000000000000..2b1d7a40bd253ba18f0bbc639a2780fab903081d
--- /dev/null
+++ b/LayoutTests/fast/dom/DeviceLight/script-tests/create-event.js
@@ -0,0 +1,15 @@
+description("Tests that document.createEvent() works with DeviceLightEvent.");
+
+var event = document.createEvent('DeviceLightEvent');
+
+shouldBeTrue("typeof event == 'object'");
+
+shouldBeTrue("'type' in event");
+shouldBeTrue("'bubbles' in event");
+shouldBeTrue("'cancelable' in event");
+shouldBeTrue("'value' in event");
+
+shouldBeTrue("typeof event.type == 'string'");
+shouldBeTrue("typeof event.bubbles == 'boolean'");
+shouldBeTrue("typeof event.cancelable == 'boolean'");
+shouldBeTrue("typeof event.value == 'number'");