Support rich line output in both speech and braille

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

 // 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.
 
 // Include test fixture.
 GEN_INCLUDE(['../../testing/chromevox_next_e2e_test_base.js',
              '../../testing/assert_additions.js']);
 
 GEN_INCLUDE(['../../testing/mock_feedback.js']);
 
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       }, true);
     </script>
   */}, function(root) {
     var input = root.find({role: RoleType.TEXT_FIELD});
     var moveByLine = input.doDefault.bind(input);
     this.listenOnce(input, 'focus', function() {
       mockFeedback.call(moveByLine)
           .expectSpeech('\n')
           .expectBraille('\n')
           .call(moveByLine)
-          .expectSpeech('This is a test of rich text')
+          .expectSpeech('This is a ', 'test', 'Link', ' of rich text')
           .expectBraille('This is a test of rich text')
           .call(moveByLine)
           .expectSpeech('\n')
           .expectBraille('\n')
           .call(moveByLine)
-          .expectSpeech('hello')
+          .expectSpeech('hello', 'Heading 2')
           .expectBraille('hello')
           .replay();
     });
     input.focus();
   });
 });
 
 TEST_F('EditingTest', 'RichTextMoveByCharacter', function() {
   var mockFeedback = this.createMockFeedback();
   this.runWithLoadedTree(function() {/*!
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     assertEquals(0, e1.startOffset);
     assertEquals(2, e1.endOffset);
 
     // Across paragraph selection with base line on anchor.
     e1 = new editing.EditableLine(thisIsATest, 5, hello, 2, true);
     assertEquals('is ', e1.text);
     assertEquals(0, e1.startOffset);
     assertEquals(3, e1.endOffset);
   })
 });