Adding support for DOM3 KeyboardEvents Code in KeyboardEvents

public/platform/Platform.h

 /*
  * Copyright (C) 2012 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 587 matching lines @@
     // Device Orientation, Device Motion, Device Light, Battery, Gamepad.
 
     // Request the platform to start listening to the events of the specified
     // type and notify the given listener (if not null) when there is an update.
     virtual void startListening(WebPlatformEventType type, WebPlatformEventListener* listener) { }
 
     // Request the platform to stop listening to the specified event and no
     // longer notify the listener, if any.
     virtual void stopListening(WebPlatformEventType type) { }
 
+    // This method converts from the supplied DOM code enum to the
+    // embedder's DOM code value for the key pressed. |domCode| values are
+    // based on the value defined in ui/events/keycodes/dom4/keycode_converter_data.h.
+    // Returns null string, if DOM code value is not found.
+    virtual WebString domCodeStringFromEnum(int domCode) { return WebString(); }
+
+    // This method converts from the suppled DOM code value to the
+    // embedder's DOM code enum for the key pressed. |codeString| is defined in
+    // ui/events/keycodes/dom4/keycode_converter_data.h.
+    // Returns 0, if DOM code enum is not found.
+    virtual int domEnumFromCodeString(const WebString& codeString) { return 0; }
+
     // Quota -----------------------------------------------------------
 
     // Queries the storage partition's storage usage and quota information.
     // WebStorageQuotaCallbacks::didQueryStorageUsageAndQuota will be called
     // with the current usage and quota information for the partition. When
     // an error occurs WebStorageQuotaCallbacks::didFail is called with an
     // error code.
     virtual void queryStorageUsageAndQuota(
         const WebURL& storagePartition,
         WebStorageQuotaType,
@@ skipping 30 matching lines @@
 
     virtual WebNavigatorConnectProvider* navigatorConnectProvider() { return 0; }
 
 protected:
     virtual ~Platform() { }
 };
 
 } // namespace blink
 
 #endif