Remove some dead code from bindings/ folder

Source/bindings/v8/ScriptHeapSnapshot.cpp

 /*
  * Copyright (c) 2010, 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 33 matching lines @@
 {
     const_cast<v8::HeapSnapshot*>(m_snapshot)->Delete();
 }
 
 String ScriptHeapSnapshot::title() const
 {
     v8::HandleScope scope(v8::Isolate::GetCurrent());
     return toCoreString(m_snapshot->GetTitle());
 }
 
-unsigned ScriptHeapSnapshot::uid() const
-{
-    return m_snapshot->GetUid();
-}
-
 namespace {
 
 class OutputStreamAdapter FINAL : public v8::OutputStream {
 public:
     OutputStreamAdapter(ScriptHeapSnapshot::OutputStream* output)
         : m_output(output) { }
     virtual void EndOfStream() OVERRIDE { m_output->Close(); }
     virtual int GetChunkSize() OVERRIDE { return 102400; }
     virtual WriteResult WriteAsciiChunk(char* data, int size) OVERRIDE
     {
         m_output->Write(String(data, size));
         return kContinue;
     }
 private:
     ScriptHeapSnapshot::OutputStream* m_output;
 };
 
 } // namespace
 
 void ScriptHeapSnapshot::writeJSON(ScriptHeapSnapshot::OutputStream* stream)
 {
     OutputStreamAdapter outputStream(stream);
     m_snapshot->Serialize(&outputStream, v8::HeapSnapshot::kJSON);
 }
 
 } // namespace WebCore