Preload scan external CSS for @import

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 26 matching lines @@
 #include "wtf/PtrUtil.h"
 #include "wtf/Vector.h"
 #include <memory>
 
 namespace blink {
 
 typedef size_t TokenPreloadScannerCheckpoint;
 
 class HTMLParserOptions;
 class HTMLTokenizer;
+class ResourcePreloader;
 class SegmentedString;
 
 struct ViewportDescriptionWrapper {
     ViewportDescription description;
     bool set;
     ViewportDescriptionWrapper()
         : set(false)
     {
     }
 };
@@ skipping 109 matching lines @@
 
     TokenPreloadScanner m_scanner;
     SegmentedString m_source;
     HTMLToken m_token;
     std::unique_ptr<HTMLTokenizer> m_tokenizer;
 };
 
 } // namespace blink
 
 #endif