Improve handling of <video>, <figure> and <br>

src/com/dom_distiller/client/RelevantElementsFinder.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package com.dom_distiller.client;
 
 import com.google.gwt.dom.client.Element;
 import com.google.gwt.dom.client.Node;
 
 import java.util.ArrayList;
@@ skipping 37 matching lines @@
      * Finds the relevant elements rooted at |root|.
      */
     private void find(final Node root) {
         DomVisitor domVisitor = new DomVisitor();
         new DomWalker(domVisitor).walk(root);
     }
 
     private static final Set<String> sRelevantTags;
     static {
         sRelevantTags = new HashSet<String>();
+        sRelevantTags.add("BR");
+        sRelevantTags.add("FIGURE");
         sRelevantTags.add("IMG");
         sRelevantTags.add("TABLE");
+        sRelevantTags.add("VIDEO");
     }
 
     /**
      * This class traverses the root element pre-orderly and determines if a visible element is
      * relevant with respect to Boilerpipe's content nodes.  A relevant element is then possibly
      * extracted by ElementVisitor.  The final output is a combined ordered list of the content
      * nodes and extracted elements.
      */
     private class DomVisitor implements DomWalker.Visitor {
         private boolean inContent;
@@ skipping 114 matching lines @@
                 case Node.DOCUMENT_NODE:
                 default:
                     return false;  // Don't recurse into comments or sub-documents.
             }
         }
 
         @Override
         public void exit(Node n) {}
     }  // ElementVisitor
 }