Yield HTMLDocumentParser after executing parser blocking script

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.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 919 matching lines @@
 }
 
 void HTMLDocumentParser::resumeParsingAfterScriptExecution()
 {
     ASSERT(!isExecutingScript());
     ASSERT(!isWaitingForScripts());
 
     if (m_haveBackgroundParser) {
         validateSpeculations(std::move(m_lastChunkBeforeScript));
         ASSERT(!m_lastChunkBeforeScript);
-        pumpPendingSpeculations();
+        if (true || RuntimeEnabledFeatures::yieldAfterScriptExecutionEnabled()) {
+            m_parserScheduler->scheduleForResume();
+        } else {
+            pumpPendingSpeculations();
+        }
         return;
     }
 
     m_insertionPreloadScanner.reset();
     pumpTokenizerIfPossible();
     endIfDelayed();
 }
 
 void HTMLDocumentParser::appendCurrentInputStreamToPreloadScannerAndScan()
 {
@@ skipping 188 matching lines @@
         (*closure)();
         return;
     case Asynchronous:
         m_loadingTaskRunner->postTask(BLINK_FROM_HERE, std::move(closure));
         return;
     }
     NOTREACHED();
 }
 
 } // namespace blink