Add GetUsbKeyCode dev interface for Pepper key events

ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 //
 // Automatically generated code.  See srpcgen.py
 //
 // NaCl Simple Remote Procedure Call interface abstractions.
 
@@ skipping 1804 matching lines @@
   return retval;
 }
 
 NaClSrpcError PpbInputEventRpcClient::PPB_InputEvent_CreateKeyboardInputEvent(
     NaClSrpcChannel* channel,
     PP_Instance instance,
     int32_t type,
     double time_stamp,
     int32_t modifiers,
     int32_t key_code,
+    int32_t usb_scan_code,
     nacl_abi_size_t character_text_bytes, char* character_text,
     PP_Resource* resource_id)  {
   VCHECK(ppapi_proxy::PPBCoreInterface()->IsMainThread(),
          ("%s: PPAPI calls are not supported off the main thread\n",
           __FUNCTION__));
   NaClSrpcError retval;
   retval = NaClSrpcInvokeBySignature(
       channel,
-      "PPB_InputEvent_CreateKeyboardInputEvent:iidiiC:i",
+      "PPB_InputEvent_CreateKeyboardInputEvent:iidiiiC:i",
       instance,
       type,
       time_stamp,
       modifiers,
       key_code,
+      usb_scan_code,
       character_text_bytes, character_text,
       resource_id
   );
   return retval;
 }
 
 NaClSrpcError PpbInstanceRpcClient::PPB_Instance_BindGraphics(
     NaClSrpcChannel* channel,
     PP_Instance instance,
     PP_Resource graphics_device,
@@ skipping 1712 matching lines @@
       channel,
       "PPB_Zoom_ZoomLimitsChanged:idd:",
       instance,
       minimum_factor,
       maximum_factor
   );
   return retval;
 }