Use aria range values for sliders

chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs

 // 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.
 
 // Include test fixture.
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js',
              '../../testing/assert_additions.js']);
 
 GEN_INCLUDE(['../../testing/mock_feedback.js']);
 
@@ skipping 405 matching lines @@
           .call(doCmd('nextObject'))
           .expectSpeech('Edit text')
           .expectEarcon(cvox.Earcon.EDITABLE_TEXT)
           .call(doCmd('nextObject'))
           .expectSpeech('List box')
           .expectEarcon(cvox.Earcon.LISTBOX)
           .call(doCmd('nextObject'))
           .expectSpeech('Button', 'has pop up')
           .expectEarcon(cvox.Earcon.POP_UP_BUTTON)
           .call(doCmd('nextObject'))
-          .expectSpeech(/slider/)
+          .expectSpeech(/Slider/)
           .expectEarcon(cvox.Earcon.SLIDER);
 
       mockFeedback.replay();
     }.bind(this));
 });
 
 TEST_F('BackgroundTest', 'ToggleChromeVoxVersion', function() {
   var mockFeedback = this.createMockFeedback();
   this.runWithLoadedTree(this.linksAndHeadingsDoc, function() {
     var gotCmd = CommandHandler.onCommand;
@@ skipping 783 matching lines @@
         .call(doCmd('nextWord'))
         .expectBraille(text, {startIndex: 5, endIndex: 7})  // is
         .call(doCmd('previousWord'))
         .expectBraille(text, {startIndex: 0, endIndex: 4})  // This
         .call(doCmd('nextLine'))
         // Ensure nothing is selected when the range covers the entire line.
         .expectBraille('with a second line', {startIndex: -1, endIndex: -1})
         .replay();
   });
 });