2. Remove HTMLParserScriptRunner's prefinalizer

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 144 matching lines @@
     HTMLParserReentryPermit* reentry_permit,
     Document* document,
     HTMLParserScriptRunnerHost* host)
     : reentry_permit_(reentry_permit),
       document_(document),
       host_(host),
       parser_blocking_script_(nullptr) {
   DCHECK(host_);
 }
 
-HTMLParserScriptRunner::~HTMLParserScriptRunner() {
-  // Verify that detach() has been called.
-  DCHECK(!document_);
-}
+HTMLParserScriptRunner::~HTMLParserScriptRunner() {}
 
 void HTMLParserScriptRunner::Detach() {
   if (!document_)
     return;
 
   if (parser_blocking_script_)
     parser_blocking_script_->Dispose();
   parser_blocking_script_ = nullptr;
 
   while (!scripts_to_execute_after_parsing_.IsEmpty()) {
@@ skipping 501 matching lines @@
 
 DEFINE_TRACE(HTMLParserScriptRunner) {
   visitor->Trace(document_);
   visitor->Trace(host_);
   visitor->Trace(parser_blocking_script_);
   visitor->Trace(scripts_to_execute_after_parsing_);
   PendingScriptClient::Trace(visitor);
 }
 
 }  // namespace blink