Remove unused roles(EditableText, SplitGroup, GrowArea) from Chromium.

chrome/test/data/extensions/api_test/automation/tests/unit/test.js

 // 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.
 
 chrome.test.runWithModuleSystem(function(moduleSystem) {
   window.AutomationRootNode =
       moduleSystem.require('automationNode').AutomationRootNode;
   window.privates = moduleSystem.privates;
   // Unused.
   window.automationUtil = function() {};
@@ skipping 271 matching lines @@
 
   function testEditableTextMixins() {
     var update = { 'nodeIdToClear': 0, 'nodes': [
         {
           'id': 1, 'role': 'rootWebArea',
           'boolAttributes': { 'docLoaded': true },
           'stringAttributes': { 'docUrl': 'chrome://terms',
                                 'docTitle': 'Google Chrome Terms of Service' },
           'intAttributes': { 'scrollY': 583,
                              'scrollYMax': 9336 },
-          'childIds': [2, 3, 4]
+          'childIds': [2, 3]
         },
         {
-          'id': 2, 'role': 'editableText',
-          'childIds': []
-        },
-        {
-          'id': 3, 'role': 'textField',
+          'id': 2, 'role': 'textField',
           'intAttributes': { 'textSelStart': 10, 'textSelEnd': 20 },
           'childIds': []
         },
         {
-          'id': 4, 'role': 'textArea',
+          'id': 3, 'role': 'textArea',
           'childIds': []
         },
 
     ] };
 
     var tree = new AutomationRootNode();
     assertTrue(privates(tree).impl.unserialize(update));
     assertEq(true, tree.docLoaded);
     assertFalse('textSelStart' in tree);
     assertFalse('textSelEnd' in tree);
-    var editableText = tree.firstChild;
-    assertEq(-1, editableText.textSelStart);
-    assertEq(-1, editableText.textSelEnd);
-    var textField = editableText.nextSibling;
+    var textField = tree.firstChild;
     assertEq(10, textField.textSelStart);
     assertEq(20, textField.textSelEnd);
     var textArea = textField.nextSibling;
     assertEq(-1, textArea.textSelStart);
     assertEq(-1, textArea.textSelEnd);
 
     succeed();
   },
 
   function testRangeMixins() {
@@ skipping 175 matching lines @@
     assertEq(1, cell4.tableCellColumnIndex);
     assertEq(1, cell4.tableCellColumnSpan);
     assertEq(1, cell4.tableCellRowIndex);
     assertEq(1, cell4.tableCellRowSpan);
 
     succeed();
   }
 ];
 
 chrome.test.runTests(tests);