Coverity: Fix a few uninitialized vars.

webkit/plugins/ppapi/event_conversion.cc

Index: webkit/plugins/ppapi/event_conversion.cc
diff --git a/webkit/plugins/ppapi/event_conversion.cc b/webkit/plugins/ppapi/event_conversion.cc
index 0ea004e0a14b483c1c6a284bd9560fef9e71304e..0a1941504133cb2d694a7fb77e742796a3e7478e 100644
--- a/webkit/plugins/ppapi/event_conversion.cc
+++ b/webkit/plugins/ppapi/event_conversion.cc
@@ -73,6 +73,7 @@ InputEventData GetEventWithCommonFieldsAndType(const WebInputEvent& web_event) {
   InputEventData result;
   result.event_type = ConvertEventTypes(web_event.type);
   result.event_time_stamp = EventTimeToPPTimeTicks(web_event.timeStampSeconds);
+  result.usb_key_code = 0;
   return result;
 }