Make DOMWrapperWorld::current() return a reference instead of a pointer

Source/bindings/v8/ScriptPreprocessor.cpp

 /*
  * Copyright (C) 2013 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 49 matching lines @@
         return;
     }
 
     ScriptValue preprocessorFunction = scriptResults[0];
     if (!preprocessorFunction.isFunction()) {
         frame->host()->console().addMessage(JSMessageSource, ErrorMessageLevel, "The preprocessor must compile to a function.");
         return;
     }
 
     m_world = DOMWrapperWorld::ensureIsolatedWorld(ScriptPreprocessorIsolatedWorldId, DOMWrapperWorld::mainWorldExtensionGroup);
-    v8::Local<v8::Context> context = toV8Context(m_isolate, frame, m_world.get());
+    v8::Local<v8::Context> context = toV8Context(m_isolate, frame, *m_world);
 
     m_context.set(m_isolate, context);
     m_preprocessorFunction.set(m_isolate, v8::Handle<v8::Function>::Cast(preprocessorFunction.v8Value()));
 }
 
 String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName)
 {
     if (!isValid())
         return sourceCode;
 
@@ skipping 26 matching lines @@
     TemporaryChange<bool> isPreprocessing(m_isPreprocessing, true);
     v8::Handle<v8::Value> resultValue = V8ScriptRunner::callAsFunction(m_preprocessorFunction.newLocal(m_isolate), m_context.newLocal(m_isolate)->Global(), WTF_ARRAY_LENGTH(argv), argv);
 
     if (!resultValue.IsEmpty() && resultValue->IsString())
         return toCoreStringWithNullCheck(resultValue.As<v8::String>());
 
     return sourceCode;
 }
 
 } // namespace WebCore