Extend AXTreeSourceViews to handle aura::Window and views::Widget.

chrome/browser/ui/views/accessibility/automation_manager_views.h

Index: chrome/browser/ui/views/accessibility/automation_manager_views.h
diff --git a/chrome/browser/ui/views/accessibility/automation_manager_views.h b/chrome/browser/ui/views/accessibility/automation_manager_views.h
index d2592ae97647cd5a86de5d1adbf700048c42b850..1c711ca1457d69ca22c8e49990ab38369e19751b 100644
--- a/chrome/browser/ui/views/accessibility/automation_manager_views.h
+++ b/chrome/browser/ui/views/accessibility/automation_manager_views.h
@@ -8,14 +8,15 @@
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 
+#include "chrome/browser/ui/views/accessibility/ax_tree_source_views.h"
 #include "ui/accessibility/ax_tree_serializer.h"
-#include "ui/views/accessibility/ax_tree_source_views.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
 class Profile;
 
 namespace views {
+class AXAuraObjWrapper;
 class View;
 }  // namespace views
 
@@ -41,7 +42,8 @@ class AutomationManagerViews {
 
   // Serializes incremental updates on the currently active tree
   // |current_tree_|.
-  scoped_ptr<ui::AXTreeSerializer<views::View*> > current_tree_serializer_;
+  scoped_ptr<ui::AXTreeSerializer<views::AXAuraObjWrapper*> >
+      current_tree_serializer_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationManagerViews);
 };