Remove some dead code from bindings/ folder

Source/bindings/v8/V8StringResource.cpp

 /*
  * 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #include "config.h"
 #include "bindings/v8/V8StringResource.h"
 
 #include "bindings/v8/V8Binding.h"
 #include "core/inspector/BindingVisitors.h"
 #include "wtf/MainThread.h"
 
 namespace WebCore {
 
-WebCoreStringResourceBase* WebCoreStringResourceBase::toWebCoreStringResourceBase(v8::Handle<v8::String> string)
-{
-    v8::String::Encoding encoding;
-    v8::String::ExternalStringResourceBase* resource = string->GetExternalStringResourceBase(&encoding);
-    if (!resource)
-        return 0;
-    if (encoding == v8::String::ONE_BYTE_ENCODING)
-        return static_cast<WebCoreStringResource8*>(resource);
-    return static_cast<WebCoreStringResource16*>(resource);
-}
-
-void WebCoreStringResourceBase::visitStrings(ExternalStringVisitor* visitor)
-{
-    visitor->visitJSExternalString(m_plainString.impl());
-    if (m_plainString.impl() != m_atomicString.impl() && !m_atomicString.isNull())
-        visitor->visitJSExternalString(m_atomicString.impl());
-}
-
 template<class StringClass> struct StringTraits {
     static const StringClass& fromStringResource(WebCoreStringResourceBase*);
     template <typename V8StringTrait>
     static StringClass fromV8String(v8::Handle<v8::String>, int);
 };
 
 template<>
 struct StringTraits<String> {
     static const String& fromStringResource(WebCoreStringResourceBase* resource)
     {
@@ skipping 52 matching lines @@
     typename V8StringTrait::CharType* buffer;
     String string = String::createUninitialized(length, buffer);
     V8StringTrait::write(v8String, buffer, length);
     return AtomicString(string);
 }
 
 template<typename StringType>
 StringType v8StringToWebCoreString(v8::Handle<v8::String> v8String, ExternalMode external)
 {
     {
-        // A lot of WebCoreStringResourceBase::toWebCoreStringResourceBase is copied here by hand for performance reasons.
         // This portion of this function is very hot in certain Dromeao benchmarks.
         v8::String::Encoding encoding;
         v8::String::ExternalStringResourceBase* resource = v8String->GetExternalStringResourceBase(&encoding);
         if (LIKELY(!!resource)) {
             WebCoreStringResourceBase* base;
             if (encoding == v8::String::ONE_BYTE_ENCODING)
                 base = static_cast<WebCoreStringResource8*>(resource);
             else
                 base = static_cast<WebCoreStringResource16*>(resource);
             return StringTraits<StringType>::fromStringResource(base);
@@ skipping 52 matching lines @@
 
 String int32ToWebCoreString(int value)
 {
     // If we are on the main thread (this should always true for non-workers), call the faster one.
     if (isMainThread())
         return int32ToWebCoreStringFast(value);
     return String::number(value);
 }
 
 } // namespace WebCore