WIP: Modified AXPosition to work with objects with both embedded object characters and text.

ui/accessibility/ax_node.h

Index: ui/accessibility/ax_node.h
diff --git a/ui/accessibility/ax_node.h b/ui/accessibility/ax_node.h
index 195d6f3cc5eb1920f0f1cd8dc66fb4369471aa2c..6dd907f5a3f9e347c8a65aa8983a0cc2182c4932 100644
--- a/ui/accessibility/ax_node.h
+++ b/ui/accessibility/ax_node.h
@@ -33,6 +33,9 @@ class AX_EXPORT AXNode {
   // Get the child at the given index.
   AXNode* ChildAtIndex(int index) const { return children_[index]; }
 
+  // Returns true if the node has any of the text related roles.
+  bool IsTextNode() const;
+
   // Set the node's accessibility data. This may be done during initial
   // initialization or later when the node data changes.
   void SetData(const AXNodeData& src);