Implement DeviceLight

public/platform/WebDeviceLightListener.h

Index: public/platform/WebDeviceLightListener.h
diff --git a/Source/core/speech/SpeechInputResultList.idl b/public/platform/WebDeviceLightListener.h
similarity index 77%
copy from Source/core/speech/SpeechInputResultList.idl
copy to public/platform/WebDeviceLightListener.h
index 878c5a6a049bde651d5e5069d20df3ad3f71763a..c275af1bbec9a9168578cabb02aafa031deab212 100644
--- a/Source/core/speech/SpeechInputResultList.idl
+++ b/public/platform/WebDeviceLightListener.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010 Google Inc. All rights reserved.
+ * Copyright (C) 2014 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -23,12 +23,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-    WillBeGarbageCollected,
-    NoInterfaceObject,
-    Conditional=INPUT_SPEECH
-] interface SpeechInputResultList {
-    readonly attribute unsigned long length;
-    getter SpeechInputResult item(unsigned long index);
+#ifndef WebDeviceLightListener_h
+#define WebDeviceLightListener_h
+
+namespace blink {
+
+class WebDeviceLightListener {
+public:
+    // This method is called every time new device light data is available.
+    virtual void didChangeDeviceLight(const double&) = 0;
 };
 
+} // namespace blink
+
+#endif // WebDeviceLightListener_h