Add GetUsbKeyCode dev interface for Pepper key events

ppapi/shared_impl/ppb_input_event_shared.cc

 // Copyright (c) 2011 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.
 
 #include "ppapi/shared_impl/ppb_input_event_shared.h"
 
 #include "ppapi/shared_impl/var.h"
 
 using ppapi::thunk::PPB_InputEvent_API;
 
@@ skipping 84 matching lines @@
 }
 
 uint32_t PPB_InputEvent_Shared::GetKeyCode() {
   return data_.key_code;
 }
 
 PP_Var PPB_InputEvent_Shared::GetCharacterText() {
   return StringVar::StringToPPVar(data_.character_text);
 }
 
+PP_Bool PPB_InputEvent_Shared::SetUsbScanCode(uint32_t usb_scan_code) {
+  data_.usb_scan_code = usb_scan_code;
+  return PP_TRUE;
+}
+
+uint32_t PPB_InputEvent_Shared::GetUsbScanCode() {
+  return data_.usb_scan_code;
+}
+
 uint32_t PPB_InputEvent_Shared::GetIMESegmentNumber() {
   if (data_.composition_segment_offsets.empty())
     return 0;
   return data_.composition_segment_offsets.size() - 1;
 }
 
 uint32_t PPB_InputEvent_Shared::GetIMESegmentOffset(uint32_t index) {
   if (index >= data_.composition_segment_offsets.size())
     return 0;
   return data_.composition_segment_offsets[index];
 }
 
 int32_t PPB_InputEvent_Shared::GetIMETargetSegment() {
   return data_.composition_target_segment;
 }
 
 void PPB_InputEvent_Shared::GetIMESelection(uint32_t* start, uint32_t* end) {
   if (start)
     *start = data_.composition_selection_start;
   if (end)
     *end = data_.composition_selection_end;
 }
 
 }  // namespace ppapi