Add fuzzer for HTMLPreloadScanner

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

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * 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
@@ skipping 46 matching lines @@
 };
 
 struct CORE_EXPORT CachedDocumentParameters {
     USING_FAST_MALLOC(CachedDocumentParameters);
 public:
     static std::unique_ptr<CachedDocumentParameters> create(Document* document)
     {
         return wrapUnique(new CachedDocumentParameters(document));
     }
 
+    static std::unique_ptr<CachedDocumentParameters> create()
+    {
+        return wrapUnique(new CachedDocumentParameters);
+    }
+
     bool doHtmlPreloadScanning;
     bool doDocumentWritePreloadScanning;
     Length defaultViewportMinWidth;
     bool viewportMetaZeroValuesQuirk;
     bool viewportMetaEnabled;
     ReferrerPolicy referrerPolicy;
 
 private:
     explicit CachedDocumentParameters(Document*);
+    CachedDocumentParameters() = default;
 };
 
 class TokenPreloadScanner {
     WTF_MAKE_NONCOPYABLE(TokenPreloadScanner); USING_FAST_MALLOC(TokenPreloadScanner);
 public:
     TokenPreloadScanner(const KURL& documentURL, std::unique_ptr<CachedDocumentParameters>, const MediaValuesCached::MediaValuesCachedData&);
     ~TokenPreloadScanner();
 
     void scan(const HTMLToken&, const SegmentedString&, PreloadRequestStream& requests, ViewportDescriptionWrapper*, bool* isCSPMetaTag);
     void scan(const CompactHTMLToken&, const SegmentedString&, PreloadRequestStream& requests, ViewportDescriptionWrapper*, bool* isCSPMetaTag, bool* likelyDocumentWriteScript);
@@ skipping 81 matching lines @@
 
     TokenPreloadScanner m_scanner;
     SegmentedString m_source;
     HTMLToken m_token;
     std::unique_ptr<HTMLTokenizer> m_tokenizer;
 };
 
 } // namespace blink
 
 #endif