Add feature extraction for distillability to Blink

third_party/WebKit/public/web/WebDocument.h

 /*
  * Copyright (C) 2009 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 41 matching lines @@
 
 class Document;
 class DocumentType;
 class WebAXObject;
 class WebDocumentType;
 class WebElement;
 class WebFormElement;
 class WebElementCollection;
 class WebString;
 class WebURL;
+struct WebDistillabilityFeatures;
 
 // Provides readonly access to some properties of a DOM document.
 class WebDocument : public WebNode {
 public:
     WebDocument() { }
     WebDocument(const WebDocument& e) : WebNode(e) { }
 
     WebDocument& operator=(const WebDocument& e)
     {
         WebNode::assign(e);
@@ skipping 57 matching lines @@
     // the selectors matches or stops matching an element in this document.
     // Each call to this method overrides any previous calls.
     BLINK_EXPORT void watchCSSSelectors(const WebVector<WebString>& selectors);
 
     BLINK_EXPORT WebVector<WebDraggableRegion> draggableRegions() const;
 
     BLINK_EXPORT v8::Local<v8::Value> registerEmbedderCustomElement(const WebString& name, v8::Local<v8::Value> options, WebExceptionCode&);
 
     BLINK_EXPORT WebURL manifestURL() const;
     BLINK_EXPORT bool manifestUseCredentials() const;
+    BLINK_EXPORT WebDistillabilityFeatures distillabilityFeatures();
 
 #if BLINK_IMPLEMENTATION
     WebDocument(const PassRefPtrWillBeRawPtr<Document>&);
     WebDocument& operator=(const PassRefPtrWillBeRawPtr<Document>&);
     operator PassRefPtrWillBeRawPtr<Document>() const;
 #endif
 };
 
 DECLARE_WEB_NODE_TYPE_CASTS(WebDocument);
 
 } // namespace blink
 
 #endif