Moved action verbs out of Blink.

ui/accessibility/ax_enums.idl

Index: ui/accessibility/ax_enums.idl
diff --git a/ui/accessibility/ax_enums.idl b/ui/accessibility/ax_enums.idl
index f98a05ffd1f3bb5692ed1dc89dacc6ba597f828a..cf416b5c21f1b0d2025ec62b1e26bb53a271ea89 100644
--- a/ui/accessibility/ax_enums.idl
+++ b/ui/accessibility/ax_enums.idl
@@ -280,6 +280,19 @@
     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,
@@ -290,7 +303,6 @@
 
   [cpp_enum_prefix_override="ax_attr"] enum AXStringAttribute {
     access_key,
-    action,
     // Only used when invalid_state == invalid_state_other.
     aria_invalid_value,
     auto_complete,
@@ -314,6 +326,7 @@
   };
 
   [cpp_enum_prefix_override="ax_attr"] enum AXIntAttribute {
+    action,
     // Scrollable container attributes.
     scroll_x,
     scroll_x_min,