Stop using WebCore namespace in generated code

Source/core/editing/EditorKeyBindings.cpp

 /*
  * Copyright (C) 2006, 2007 Apple, Inc.  All rights reserved.
  * 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 53 matching lines @@
     return insertText(evt->keyEvent()->text(), evt);
 }
 
 void Editor::handleKeyboardEvent(KeyboardEvent* evt)
 {
     // Give the embedder a chance to handle the keyboard event.
     if (client().handleKeyboardEvent() || handleEditingKeyboardEvent(evt))
         evt->setDefaultHandled();
 }
 
-} // namesace WebCore
+} // namespace blink