Add toWebCoreString() / toWebCoreAtomicString() overloads taking a v8::String

Source/bindings/v8/IDBBindingUtilities.cpp

 /*
  * 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 61 matching lines @@
     return v8Undefined();
 }
 
 static const size_t maximumDepth = 2000;
 
 static PassRefPtr<IDBKey> createIDBKeyFromValue(v8::Handle<v8::Value> value, Vector<v8::Handle<v8::Array> >& stack, v8::Isolate* isolate)
 {
     if (value->IsNumber() && !std::isnan(value->NumberValue()))
         return IDBKey::createNumber(value->NumberValue());
     if (value->IsString())
-        return IDBKey::createString(toWebCoreString(value));
+        return IDBKey::createString(toWebCoreString(value.As<v8::String>()));
     if (value->IsDate() && !std::isnan(value->NumberValue()))
         return IDBKey::createDate(value->NumberValue());
     if (value->IsArray()) {
         v8::Handle<v8::Array> array = v8::Handle<v8::Array>::Cast(value);
 
         if (stack.contains(array))
             return 0;
         if (stack.size() >= maximumDepth)
             return 0;
         stack.append(array);
@@ skipping 244 matching lines @@
 {
     v8::Isolate* isolate = state ? state->context()->GetIsolate() : v8::Isolate::GetCurrent();
     v8::HandleScope handleScope(isolate);
     v8::Handle<v8::Value> value(scriptValue.v8Value());
     if (V8IDBKeyRange::HasInstance(value, isolate, worldType(isolate)))
         return V8IDBKeyRange::toNative(value.As<v8::Object>());
     return 0;
 }
 
 } // namespace WebCore