Propagate drag-and-drop key modifiers to WebView's guest renderer.

third_party/WebKit/public/platform/WebDragData.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 119 matching lines @@
     {
         return m_filesystemId;
     }
 
     void setFilesystemId(const WebString& filesystemId)
     {
         // The ID is an opaque string, given by and validated by chromium port.
         m_filesystemId = filesystemId;
     }
 
+    int modifierKeyState() const
+    {
+        return m_modifierKeyState;
+    }
+
+    void setModifierKeyState(int state)
+    {
+        m_modifierKeyState = state;
+    }
+
 private:
     bool m_valid;
     WebVector<Item> m_itemList;
     int m_modifierKeyState; // State of Shift/Ctrl/Alt/Meta keys.
     WebString m_filesystemId;
 };
 
 } // namespace blink
 
 #endif