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..c209426763a5c99f001933f4df4b96f06b4d25da 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
 
@@ -25,6 +26,12 @@ class AutomationManagerViews {
   // Get the single instance of this class.
   static AutomationManagerViews* GetInstance();
 
+  // Enable views-based automation.

[dmazzoni, 2014/04/29 17:20:59]

That sounds backwards if you don't already understand what this class is for.
I'd say: Enable automation support for Views.

+  void Enable();
+
+  // Disable views-based automation.
+  void Disable();
+
   // Handle an event fired upon a |View|.
   void HandleEvent(Profile* profile, views::View* view, ui::AXEvent event_type);
 
@@ -34,14 +41,18 @@ class AutomationManagerViews {
   AutomationManagerViews();
   ~AutomationManagerViews();
 
+  // Whether Views-based automation is enabled.
+  bool enabled_;
+
   // Holds the active views-based accessibility tree. A tree currently consists
   // of all views descendant to a |Widget| (see |AXTreeSourceViews|).
   // A tree becomes active when an event is fired on a descendant view.
-  scoped_ptr <views::AXTreeSourceViews> current_tree_;
+  scoped_ptr <AXTreeSourceViews> current_tree_;
 
   // 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);
 };