Make Resource RefCountedWillBeGarbageCollectedFinalized, attempt #2

third_party/WebKit/Source/bindings/core/v8/ScriptSourceCode.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "bindings/core/v8/ScriptSourceCode.h"
 
 namespace blink {
 
 ScriptSourceCode::ScriptSourceCode()
-    : m_resource(0)
-    , m_startPosition(TextPosition::minimumPosition())
+    : m_startPosition(TextPosition::minimumPosition())
 {
 }
 
 ScriptSourceCode::ScriptSourceCode(const String& source, const KURL& url, const TextPosition& startPosition)
     : ScriptSourceCode(CompressibleString(source.impl()), url, startPosition)
 {
 }
 
 ScriptSourceCode::ScriptSourceCode(const CompressibleString& source, const KURL& url, const TextPosition& startPosition)
     : m_source(source)
-    , m_resource(0)
     , m_url(url)
     , m_startPosition(startPosition)
 {
     treatNullSourceAsEmpty();
     if (!m_url.isEmpty())
         m_url.removeFragmentIdentifier();
 }
 
 ScriptSourceCode::ScriptSourceCode(ScriptResource* resource)
     : m_source(resource->script())
@@ skipping 11 matching lines @@
 {
     treatNullSourceAsEmpty();
 }
 
 ScriptSourceCode::~ScriptSourceCode()
 {
 }
 
 DEFINE_TRACE(ScriptSourceCode)
 {
+    visitor->trace(m_resource);
     visitor->trace(m_streamer);
 }
 
 const KURL& ScriptSourceCode::url() const
 {
     if (m_url.isEmpty() && m_resource) {
         m_url = m_resource->response().url();
         if (!m_url.isEmpty())
             m_url.removeFragmentIdentifier();
     }
@@ skipping 20 matching lines @@
     // construct such a value.
     //
     // Should the other constructors be passed a null string, that is interpreted as representing
     // the empty script. Consequently, we need to disambiguate between such null string occurrences.
     // Do that by converting the latter case's null strings into empty ones.
     if (m_source.isNull())
         m_source = CompressibleString();
 }
 
 } // namespace blink