Transform XML tree viewer to blink-in-js implementation.

Source/core/xml/XMLTreeViewer.h

 /*
  * Copyright (C) 2011 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.
  *
@@ skipping 11 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef XMLTreeViewer_h
 #define XMLTreeViewer_h
 
+#include "bindings/core/v8/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Document;
 
-class XMLTreeViewer FINAL {
+class XMLTreeViewer FINAL : public GarbageCollectedFinalized<XMLTreeViewer>, public ScriptWrappable {

[vivekg, 2014/08/26 05:41:48]

Can't we generate this class automatically? As can be seen, there isn't any work
done by this class specifically.

[haraken, 2014/08/26 05:57:48]

This class shouldn't be necessary at all. We need to improve the IDL compiler so
that it doesn't generate code that requires XMLTreeViewer.

     STACK_ALLOCATED();
 public:
-    explicit XMLTreeViewer(Document*);
-
-    void transformDocumentToTreeView();
-
-private:
-    RawPtrWillBeMember<Document> m_document;
+    explicit XMLTreeViewer() { ScriptWrappable::init(this); }
+    void trace(Visitor*) { }
 };
 
 } // namespace blink
 
 #endif // XMLTreeViewer_h