Move AX Role predicates into ax_role_properties.h.

ui/accessibility/ax_role_properties.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_ACCESSIBILITY_AX_ROLE_PROPERTIES_H_
 #define UI_ACCESSIBILITY_AX_ROLE_PROPERTIES_H_
 
 #include "ui/accessibility/ax_enums.h"
 #include "ui/accessibility/ax_export.h"
 
 namespace ui {
 
 // Checks if the given role should belong to a control that can respond to
 // clicks.
 AX_EXPORT bool IsRoleClickable(AXRole role);
 
+// Returns true if this node is a cell or a table header.
+AX_EXPORT bool IsCellOrTableHeaderRole(AXRole role);
+
+// Returns true if this node is a table, a grid or a treegrid.
+AX_EXPORT bool IsTableLikeRole(AXRole role);
+
+// Returns true if this node is a container with selectable children.
+AX_EXPORT bool IsContainerWithSelectableChildrenRole(ui::AXRole role);
+
+// Returns true if this node is a row container.
+AX_EXPORT bool IsRowContainer(ui::AXRole role);
+
 }  // namespace ui
 
 #endif  // UI_ACCESSIBILITY_AX_ROLE_PROPERTIES_H_