Add support for Schema.org/Recipe

java/org/chromium/distiller/OpenGraphProtocolParserAccessor.java

 package org.chromium.distiller;
 
 import com.google.gwt.dom.client.Element;
 import org.chromium.distiller.proto.DomDistillerProtos;
 
 public class OpenGraphProtocolParserAccessor implements MarkupParser.Accessor {
 
     private final Element mRoot;
     private final DomDistillerProtos.TimingInfo mTimingInfo;
 
@@ skipping 133 matching lines @@
         return null;
     }
 
     @Override
     public boolean optOut() {
         // While this is not directly supported, the page owner can
         // simply omit the required tags and init() will return
         // a null OpenGraphProtocolParser.
         return false;
     }
+
+    @Override
+    public String getStructuredData() {
+        return "";
+    }
 }