Add Windows nativeKeyCode to USB keycode conversion table

webkit/plugins/ppapi/usb_key_code_conversion_win.cc

Index: webkit/plugins/ppapi/usb_key_code_conversion_win.cc
===================================================================
--- webkit/plugins/ppapi/usb_key_code_conversion_win.cc	(revision 0)
+++ webkit/plugins/ppapi/usb_key_code_conversion_win.cc	(revision 0)
@@ -0,0 +1,39 @@
+// 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.
+
+#include "webkit/plugins/ppapi/usb_key_code_conversion.h"
+
+#include "base/basictypes.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
+
+using WebKit::WebKeyboardEvent;
+
+namespace webkit {
+namespace ppapi {
+
+namespace {
+
+#define USB_KEYMAP(usb, xkb, win, mac) {usb, win}
+#include "webkit/plugins/ppapi/usb_keycode_map.h"
+#undef USB_KEYMAP
+
+}  // anonymous namespace
+
+
+uint32_t UsbKeyCodeForKeyboardEvent(const WebKeyboardEvent& key_event) {
+  // Extract the scancode and extended bit from the native key event's lParam.
+  int scancode = (key_event.nativeKeyCode >> 16) & 0x000000FF;
+  if ((key_event.nativeKeyCode & (1 << 24)) != 0)
+    scancode |= 0xe000;
+
+  for (int i = 0; i < arraysize(usb_keycode_map); i++) {
+    if (usb_keycode_map[i].native_keycode == scancode)
+      return usb_keycode_map[i].usb_keycode;
+  }
+
+  return 0;
+}
+
+}  // namespace ppapi
+}  // namespace webkit