Eagerly dispose of ScheduledActions (reland.)

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_startPosition(TextPosition::minimumPosition()) {}
@@ skipping 18 matching lines @@
                                    ScriptResource* resource)
     : m_source(resource->script()),
       m_resource(resource),
       m_streamer(streamer),
       m_startPosition(TextPosition::minimumPosition()) {
   treatNullSourceAsEmpty();
 }
 
 ScriptSourceCode::~ScriptSourceCode() {}
 
+void ScriptSourceCode::dispose() {
+  m_source = String();
+  m_resource = nullptr;
+  m_streamer = nullptr;
+  m_url = KURL();
+}
+
 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 @@
   //
   // 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 = "";
 }
 
 }  // namespace blink