Move IA2 State handling to AXPlatformNodeWin.

ui/accessibility/ax_role_properties.cc

Index: ui/accessibility/ax_role_properties.cc
diff --git a/ui/accessibility/ax_role_properties.cc b/ui/accessibility/ax_role_properties.cc
index bf66431a0f8705a5813f613e73534cf386cae643..34355fea45338329260e26cf67b3d67497fe2a25 100644
--- a/ui/accessibility/ax_role_properties.cc
+++ b/ui/accessibility/ax_role_properties.cc
@@ -133,4 +133,8 @@ bool IsMenuRelated(ui::AXRole role) {
   }
 }
 
+bool IsEditField(ui::AXRole role) {
+  return role == ui::AX_ROLE_TEXT_FIELD || role == ui::AX_ROLE_SEARCH_BOX;
+}
+
 }  // namespace ui