Moved action verbs out of Blink.

ui/accessibility/ax_enums.idl

 // Copyright 2014 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.
 
 // TODO(nektar): Migrate entire file to Mojoq.
 // These should be kept in sync with third_party/WebKit/public/web/WebAXEnums.h
 // until the Chromium and Blink trees are merged.
 [camel_case_enum_to_string=true] namespace ui {
 
   // For new entries to the following four enums, also add to
@@ skipping 262 matching lines @@
     set_value,
 
     show_context_menu
   };
 
   enum AXActionFlags {
     request_images,
     request_inline_text_boxes
   };
 
+  // Lists the actions that can be performed on a given element.

[dmazzoni, 2016/11/22 01:01:08]

Please add a comment explaining the difference between AXAction and
AXSupportedAction. AXAction is for the actions we implement that
actually have different semantics internally.

AXSupportedAction is a hint as to what will happen when you trigger
an action, like "jump", "activate", or "uncheck" - those all map to the
same AXAction in terms of how we implement them.

+  // Only one action is supported for now.
+  enum AXSupportedAction {
+    activate,
+    check,
+    click,
+    jump,
+    open,
+    press,
+    select,
+    uncheck
+  };
+
   // A change to the accessibility tree.
   enum AXMutation {
     node_created,
     subtree_created,
     node_changed,
     node_removed
   };
 
   [cpp_enum_prefix_override="ax_attr"] enum AXStringAttribute {
     access_key,
-    action,
     // Only used when invalid_state == invalid_state_other.
     aria_invalid_value,
     auto_complete,
     container_live_relevant,
     container_live_status,
     description,
     display,
     // Only present when different from parent.
     font_family,
     html_tag,
     // Only present when different from parent.
     language,
     name,
     live_relevant,
     live_status,
     placeholder,
     role,
     shortcut,
     url,
     value
   };
 
   [cpp_enum_prefix_override="ax_attr"] enum AXIntAttribute {
+    action,
     // Scrollable container attributes.
     scroll_x,
     scroll_x_min,
     scroll_x_max,
     scroll_y,
     scroll_y_min,
     scroll_y_max,
 
     // Attributes for retrieving the endpoints of a selection.
     text_sel_start,
@@ skipping 273 matching lines @@
     // First node is before the second one.
     before,
 
     // Nodes are the same.
     equal,
 
     // First node is after the second one.
     after
   };
 };