text: /*
   * 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
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_RESOURCE_PRELOADER_H_
  #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_RESOURCE_PRELOADER_H_
  
  #include <memory>
  
  #include "base/macros.h"
  #include "third_party/blink/renderer/core/html/parser/css_preload_scanner.h"
  #include "third_party/blink/renderer/core/html/parser/preload_request.h"
  #include "third_party/blink/renderer/core/html/parser/resource_preloader.h"
  #include "third_party/blink/renderer/core/loader/network_hints_interface.h"
  #include "third_party/blink/renderer/platform/heap/heap.h"
  #include "third_party/blink/renderer/platform/wtf/text/text_position.h"
  #include "third_party/blink/renderer/platform/wtf/time.h"
  
  namespace blink {
  
  class Document;
  
  class CORE_EXPORT HTMLResourcePreloader
      : public GarbageCollected<HTMLResourcePreloader>,
        public ResourcePreloader {
    friend class HTMLResourcePreloaderTest;
  
   public:
    static HTMLResourcePreloader* Create(Document&);
    int CountPreloads();
    Document* GetDocument() { return document_.Get(); }
    void Trace(blink::Visitor*);
  
   protected:
    void Preload(std::unique_ptr<PreloadRequest>,
                 const NetworkHintsInterface&) override;
    explicit HTMLResourcePreloader(Document&);
  
   private:
    Member<Document> document_;
    HeapHashMap<String, Member<CSSPreloaderResourceClient>> css_preloaders_;
  
    DISALLOW_COPY_AND_ASSIGN(HTMLResourcePreloader);
  };
  
  }  // namespace blink
  
  #endif
  