Fix some warnings in Eclipse

javatests/org/chromium/distiller/TestTextDocumentBuilder.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 org.chromium.distiller;
 
 import org.chromium.distiller.document.TextBlock;
 import org.chromium.distiller.document.TextDocument;
 import org.chromium.distiller.webdocument.DomConverter;
 import org.chromium.distiller.webdocument.TestWebTextBuilder;
 import org.chromium.distiller.webdocument.WebDocumentBuilder;
 import org.chromium.distiller.webdocument.WebElement;
 import org.chromium.distiller.webdocument.WebText;
 
 import com.google.gwt.dom.client.Document;
 import com.google.gwt.dom.client.Element;
 import com.google.gwt.dom.client.Node;
 
 import java.util.ArrayList;
 
 public class TestTextDocumentBuilder {
     private ArrayList<TextBlock> textBlocks;
     private ArrayList<WebElement> elements;
     private TestWebTextBuilder webTextBuilder;
-    private int textBlockIndex;
-
     public TestTextDocumentBuilder() {
         textBlocks = new ArrayList<>();
         elements = new ArrayList<>();
         webTextBuilder = new TestWebTextBuilder();
-        textBlockIndex = 0;
     }
 
     private TextBlock addBlock(String text, String... labels) {
         WebText wt = webTextBuilder.createForText(text);
         for (String label : labels) {
             wt.addLabel(label);
         }
         elements.add(wt);
         textBlocks.add(new TextBlock(elements, elements.size() - 1));
         return textBlocks.get(textBlocks.size() - 1);
@@ skipping 22 matching lines @@
             body.appendChild(docElement);
             new DomWalker(domConverter).walk(docElement);
             body.removeChild(docElement);
         } else {
             new DomWalker(domConverter).walk(docElement);
         }
 
         return builder.toWebDocument().createTextDocumentView();
     }
 }