a11y: Exclude children of nested keyboard accessible controls from a11y tree.

ui/views/view.h

Index: ui/views/view.h
diff --git a/ui/views/view.h b/ui/views/view.h
index a6811afca8a5c084b0d81d5ab375e483cc46c006..8ded0e44f49cceb5159e9510923533b0e92f8dd4 100644
--- a/ui/views/view.h
+++ b/ui/views/view.h
@@ -779,7 +779,8 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
   // IMPORTANT NOTE: loops in the focus hierarchy are not supported.
   void SetNextFocusableView(View* view);
 
-  // Sets |focus_behavior| and advances focus if necessary.
+  // Gets/sets |focus_behavior|. SetFocusBehavior() advances focus if necessary.
+  FocusBehavior focus_behavior() const { return focus_behavior_; }
   void SetFocusBehavior(FocusBehavior focus_behavior);
 
   // Returns true if this view is focusable, |enabled_| and drawn.
@@ -1154,9 +1155,6 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
 
   // Focus ---------------------------------------------------------------------
 
-  // Returns last set focus behavior.
-  FocusBehavior focus_behavior() const { return focus_behavior_; }
-
   // Override to be notified when focus has changed either to or from this View.
   virtual void OnFocus();
   virtual void OnBlur();