Retrieve resources from media and supports query rules while serializing

Source/core/page/PageSerializer.h

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 #include "wtf/HashMap.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class Attribute;
 class FontResource;
 class ImageResource;
+class CSSRule;
 class CSSStyleSheet;
 class CSSValue;
 class Document;
 class LocalFrame;
 class Page;
 class LayoutObject;
 class Resource;
 class SharedBuffer;
 class StylePropertySet;
 
@@ skipping 21 matching lines @@
 
     Delegate* delegate();
 
 private:
     void serializeFrame(LocalFrame*);
 
     // Serializes the stylesheet back to text and adds it to the resources if URL is not-empty.
     // It also adds any resources included in that stylesheet (including any imported stylesheets and their own resources).
     void serializeCSSStyleSheet(CSSStyleSheet&, const KURL&);
 
+    // Serializes the css rule (including any imported stylesheets), adding referenced resources.
+    void serializeCSSRule(CSSRule*);
+
     bool shouldAddURL(const KURL&);
 
     void addToResources(Resource *, PassRefPtr<SharedBuffer>, const KURL&);
     void addImageToResources(ImageResource*, LayoutObject*, const KURL&);
     void addFontToResources(FontResource*);
 
     void retrieveResourcesForProperties(const StylePropertySet*, Document&);
     void retrieveResourcesForCSSValue(CSSValue*, Document&);
 
     Vector<SerializedResource>* m_resources;
     ListHashSet<KURL> m_resourceURLs;
 
     using BlankFrameURLMap = WillBeHeapHashMap<RawPtrWillBeMember<LocalFrame>, KURL>;
     BlankFrameURLMap m_blankFrameURLs;
     unsigned m_blankFrameCounter;
 
     OwnPtr<Delegate> m_delegate;
 };
 
 } // namespace blink
 
 #endif // PageSerializer_h