Add GetUsbKeyCode dev interface for Pepper key events

webkit/plugins/ppapi/event_conversion.h

Index: webkit/plugins/ppapi/event_conversion.h
diff --git a/webkit/plugins/ppapi/event_conversion.h b/webkit/plugins/ppapi/event_conversion.h
index ad95ebfde38a36dfcbad2fd09c9e68e4157ff923..dce6cb8fe0c0a7b3933fa75cd006db82e7e18e50 100644
--- a/webkit/plugins/ppapi/event_conversion.h
+++ b/webkit/plugins/ppapi/event_conversion.h
@@ -27,9 +27,8 @@ namespace ppapi {
 // Converts the given WebKit event to one or possibly multiple PP_InputEvents.
 // The generated events will be filled into the given vector. On failure, no
 // events will ge generated and the vector will be empty.
-void CreatePPEvent(const WebKit::WebInputEvent& event,
-                   std::vector<PP_InputEvent>* pp_events);
-
+// Setting the |lowlevel_keyboard_events| flag causes low-level USB scancode
+// to be returned for key events (instead of Windows virtual keycodes).
 void CreateInputEventData(const WebKit::WebInputEvent& event,
                           std::vector< ::ppapi::InputEventData >* pp_events);