Calc USB scancodes for key events (linux only for now)

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 4b1f2ddecdd22ddce890879e70176728b0e2e0bd..9936ce3c83611d870109e61c5a066ba3e34252f1 100644
--- a/webkit/plugins/ppapi/event_conversion.cc
+++ b/webkit/plugins/ppapi/event_conversion.cc
@@ -18,6 +18,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "webkit/plugins/ppapi/common.h"
+#include "webkit/plugins/ppapi/usb_key_code_conversion.h"
 
 using ppapi::EventTimeToPPTimeTicks;
 using ppapi::InputEventData;
@@ -81,9 +82,7 @@ void AppendKeyEvent(const WebInputEvent& event,
   InputEventData result = GetEventWithCommonFieldsAndType(event);
   result.event_modifiers = key_event.modifiers;
   result.key_code = key_event.windowsKeyCode;
-  // TODO(garykac): Platform-specific code to convert from
-  // |key_event.nativeKeyCode| to USB key code.
-  result.usb_key_code = 0;
+  result.usb_key_code = UsbKeyCodeForKeyboardEvent(key_event);
   result_events->push_back(result);
 }