implement validations of pagination URLs

javatests/org/chromium/distiller/ParsedUrlTest.java

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 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;
 
 public class ParsedUrlTest extends JsTestCase {
 
     private static final String VALID_URL =
             "http://fooUser:fooPwd@www.foo.com/path0/path1/;pathParams?qA=B&qC=D";
 
@@ skipping 46 matching lines @@
         ParsedUrl url = ParsedUrl.create(VALID_URL);
         assertTrue(url != null);
         assertEquals("?qA=B&qC=D", url.getQuery());
         assertEquals("http://fooUser:fooPwd@www.foo.com/path0/path1/;pathParams?qA=E&qC=D",
                 url.replaceQueryValue("qA", "B", "E"));
         // Original query shouldn't change.
         assertEquals("?qA=B&qC=D", url.getQuery());
     }
 
 }