Preload tokens even if a <meta> csp tag is found

third_party/WebKit/Source/core/html/parser/BackgroundHTMLParser.h

 /*
  * Copyright (C) 2013 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 18 matching lines @@
 #include "core/dom/DocumentEncodingData.h"
 #include "core/html/parser/BackgroundHTMLInputStream.h"
 #include "core/html/parser/CompactHTMLToken.h"
 #include "core/html/parser/HTMLParserOptions.h"
 #include "core/html/parser/HTMLPreloadScanner.h"
 #include "core/html/parser/HTMLSourceTracker.h"
 #include "core/html/parser/HTMLTreeBuilderSimulator.h"
 #include "core/html/parser/TextResourceDecoder.h"
 #include "core/html/parser/TokenizedChunkQueue.h"
 #include "core/html/parser/XSSAuditorDelegate.h"
+#include "wtf/Optional.h"
 #include "wtf/WeakPtr.h"
 #include <memory>
 
 namespace blink {
 
 class HTMLDocumentParser;
 class XSSAuditor;
 class WebTaskRunner;
 
 class BackgroundHTMLParser {
@@ skipping 75 matching lines @@
     ViewportDescriptionWrapper m_viewportDescription;
     XSSInfoStream m_pendingXSSInfos;
 
     std::unique_ptr<XSSAuditor> m_xssAuditor;
     std::unique_ptr<TokenPreloadScanner> m_preloadScanner;
     std::unique_ptr<TextResourceDecoder> m_decoder;
     DocumentEncodingData m_lastSeenEncodingData;
     std::unique_ptr<WebTaskRunner> m_loadingTaskRunner;
     RefPtr<TokenizedChunkQueue> m_tokenizedChunkQueue;
 
+    WTF::Optional<int> m_pendingCSPMetaTokenIndex;

[kouhei (in TOK), 2016/08/22 05:34:03]

Checked with TOK C++ experts. I think we should go with a reserved value (-1)
for invalid token index. WTF::Optional is cute, but is an overkill here.

[Charlie Harrison, 2016/08/22 14:08:05]

SGTM. Changed it.

+
     bool m_startingScript;
     double m_lastBytesReceivedTime;
     bool m_shouldCoalesceChunks;
 };
 
 } // namespace blink
 
 #endif