Add GetUsbKeyCode dev interface for Pepper key events

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

Index: ppapi/native_client/src/shared/ppapi_proxy/input_event_data.cc
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.cc b/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.cc
index 3e3f95af2dba4a4c55f976acc9c4dc69e9ff8cc5..47d1a95c4ad88f735213f4b4080e368227728464 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.cc
+++ b/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.cc
@@ -1,4 +1,4 @@
-// Copyright 2011 The Chromium Authors. All rights reserved.
+// Copyright 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.
 
@@ -17,7 +17,9 @@ InputEventData::InputEventData()
       wheel_delta(PP_MakeFloatPoint(0.0f, 0.0f)),
       wheel_ticks(PP_MakeFloatPoint(0.0f, 0.0f)),
       wheel_scroll_by_page(PP_FALSE),
-      key_code(0) {
+      key_code(0),
+      usb_key_code(0),
+      unused_padding(0) {
 }
 
 InputEventData::~InputEventData() {