Adding support for DOM3 KeyboardEvents Code in KeyboardEvents

public/web/WebInputEvent.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 228 matching lines @@
     // what is returned by the Windows API. For example, it should
     // store VK_SHIFT instead of VK_RSHIFT. The location information
     // should be stored in |modifiers|.
     int windowsKeyCode;
 
     // The actual key code genenerated by the platform.  The DOM spec runs
     // on Windows-equivalent codes (thus |windowsKeyCode| above) but it
     // doesn't hurt to have this one around.
     int nativeKeyCode;
 
+    // The usbCode for the key generated. USB code is then used to map to
+    // code as per DOM3 Keyboard Code Specifications.
+    // This code however is not used for testing, it relies on windowsKeyCode.
+    int usbCode;
+
     // This identifies whether this event was tagged by the system as being
     // a "system key" event (see
     // http://msdn.microsoft.com/en-us/library/ms646286(VS.85).aspx for
     // details). Other platforms don't have this concept, but it's just
     // easier to leave it always false than ifdef.
     // See comment at the top of the file for why an int is used here.
     bool isSystemKey;
 
     // |text| is the text generated by this keystroke.  |unmodifiedText| is
     // |text|, but unmodified by an concurrently-held modifiers (except
@@ skipping 243 matching lines @@
         , cancelable(true)
     {
     }
 };
 
 #pragma pack(pop)
 
 } // namespace blink
 
 #endif