Reland: Make the check for compat mode explicit.

chrome/browser/resources/chromeos/chromevox/cvox2/background/cursors.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.
 
 /**
  * @fileoverview Classes related to cursors that point to and select parts of
  * the automation tree.
  */
 
 goog.provide('cursors.Cursor');
@@ skipping 415 matching lines @@
         newStart = newStart.move(unit, Movement.BOUND, Dir.BACKWARD);
         newEnd = newStart.move(unit, Movement.BOUND, Dir.FORWARD);
         break;
       case Unit.NODE:
       case Unit.DOM_NODE:
         newStart = newStart.move(unit, Movement.DIRECTIONAL, dir);
         newEnd = newStart;
         break;
     }
     return new cursors.Range(newStart, newEnd);
+  },
+
+  /**
+   * Returns true if this range has either cursor end on web content.
+   * @return {boolean}
+  */
+  isWebRange: function() {
+    return this.start.node.root.role != Role.desktop ||
+        this.end.node.root.role != Role.desktop;
   }
 };
 
 });  // goog.scope