Simplify AtomicStringTable and remove lots of dead code.

third_party/WebKit/Source/wtf/text/AtomicString.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 27 matching lines @@
 public:
     static void init();
 
     AtomicString() {}
     AtomicString(const LChar* chars)
         : AtomicString(chars, chars ? strlen(reinterpret_cast<const char*>(chars)) : 0) {}
     AtomicString(const char* chars)
         : AtomicString(reinterpret_cast<const LChar*>(chars)) {}
     AtomicString(const LChar* chars, unsigned length);
     AtomicString(const UChar* chars, unsigned length);
-    AtomicString(const UChar* chars, unsigned length, unsigned existingHash);
     AtomicString(const UChar* chars);
 
     template<size_t inlineCapacity>
     explicit AtomicString(const Vector<UChar, inlineCapacity>& vector)
         : AtomicString(vector.data(), vector.size()) {}
 
     // Constructing an AtomicString from a String / StringImpl can be expensive if
     // the StringImpl is not already atomic.
     explicit AtomicString(StringImpl* impl) : m_string(add(impl)) { }
     explicit AtomicString(const String& s) : m_string(add(s.impl())) { }
 
-    AtomicString(StringImpl* baseString, unsigned start, unsigned length);
-
     // Hash table deleted values, which are only constructed and never copied or destroyed.
     AtomicString(WTF::HashTableDeletedValueType) : m_string(WTF::HashTableDeletedValue) { }
     bool isHashTableDeletedValue() const { return m_string.isHashTableDeletedValue(); }
 
     operator const String&() const { return m_string; }
     const String& getString() const { return m_string; }
 
     StringImpl* impl() const { return m_string.impl(); }
 
     bool is8Bit() const { return m_string.is8Bit(); }
@@ skipping 144 matching lines @@
 using WTF::AtomicString;
 using WTF::nullAtom;
 using WTF::emptyAtom;
 using WTF::starAtom;
 using WTF::xmlAtom;
 using WTF::xmlnsAtom;
 using WTF::xlinkAtom;
 
 #include "wtf/text/StringConcatenate.h"
 #endif // AtomicString_h