Introduce PendingScript::startStreamingIfPossible()

third_party/WebKit/Source/core/html/parser/HTMLParserScriptRunner.cpp

 /*
  * Copyright (C) 2010 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 536 matching lines @@
   m_parserBlockingScript = requestPendingScript(element);
   if (!parserBlockingScript())
     return;
 
   DCHECK(parserBlockingScript()->resource());
 
   // We only care about a load callback if resource is not already in the cache.
   // Callers will attempt to run the m_parserBlockingScript if possible before
   // returning control to the parser.
   if (!parserBlockingScript()->isReady()) {
-    if (m_document->frame()) {
-      ScriptState* scriptState = toScriptStateForMainWorld(m_document->frame());
-      if (scriptState) {
-        ScriptStreamer::startStreaming(
-            m_parserBlockingScript, ScriptStreamer::ParsingBlocking,
-            m_document->frame()->settings(), scriptState,
-            TaskRunnerHelper::get(TaskType::Networking, m_document));
-      }
-    }
-
+    m_parserBlockingScript->startStreamingIfPossible(
+        m_document, ScriptStreamer::ParsingBlocking);
     m_parserBlockingScript->watchForLoad(this);
   }
 }
 
 // 1st Clause, Step 23 of https://html.spec.whatwg.org/#prepare-a-script
 void HTMLParserScriptRunner::requestDeferredScript(Element* element) {
   PendingScript* pendingScript = requestPendingScript(element);
   if (!pendingScript)
     return;
 
-  if (m_document->frame() && !pendingScript->isReady()) {
-    ScriptState* scriptState = toScriptStateForMainWorld(m_document->frame());
-    if (scriptState) {
-      ScriptStreamer::startStreaming(
-          pendingScript, ScriptStreamer::Deferred,
-          m_document->frame()->settings(), scriptState,
-          TaskRunnerHelper::get(TaskType::Networking, m_document));
-    }
+  if (!pendingScript->isReady()) {
+    pendingScript->startStreamingIfPossible(m_document,
+                                            ScriptStreamer::Deferred);
   }
 
   DCHECK(pendingScript->resource());
 
   // "Add the element to the end of the list of scripts that will execute
   //  when the document has finished parsing associated with the Document
   //  of the parser that created the element."
   m_scriptsToExecuteAfterParsing.push_back(pendingScript);
 }
 
@@ skipping 96 matching lines @@
 
 DEFINE_TRACE(HTMLParserScriptRunner) {
   visitor->trace(m_document);
   visitor->trace(m_host);
   visitor->trace(m_parserBlockingScript);
   visitor->trace(m_scriptsToExecuteAfterParsing);
   PendingScriptClient::trace(visitor);
 }
 
 }  // namespace blink