Use setSequentialFocusNavigationStartingPoint in ChromeVox

chrome/common/extensions/api/automation.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.
 
 // The <code>chrome.automation</code> API allows developers to access the
 // automation (accessibility) tree for the browser. The tree resembles the DOM
 // tree, but only exposes the <em>semantic</em> structure of a page. It can be
 // used to programmatically interact with a page by examining names, roles, and
 // states, listening for events, and performing actions on nodes.
 [nocompile] namespace automation {
@@ skipping 198 matching lines @@
     protected,
     readOnly,
     required,
     richlyEditable,
     selectable,
     selected,
     vertical,
     visited
   };
 
-  // Actions that can be taken on an $(ref:automation.AutomationNode).
-  enum ActionType {
-    doDefault,
-    hitTest,
-    scrollToMakeVisible,
-    scrollToPoint,
-    setAccessibilityFocus,
-    setFocus,
-    setScrollOffset,
-    setSelection,
-    setValue,
-    showContextMenu
-  };
-
   // Possible changes to the automation tree. For any given atomic change
   // to the tree, each node that's added, removed, or changed, will appear
   // in exactly one TreeChange, with one of these types.
   //
   //
   // nodeCreated means that this node was added to the tree and its parent is
   // new as well, so it's just one node in a new subtree that was added.
   enum TreeChangeType {
     /**
      * This node was added to the tree and its parent is new as well,
@@ skipping 342 matching lines @@
 
     // Places focus on this node.
     static void focus();
 
     // Scrolls this node to make it visible.
     static void makeVisible();
 
     // Sets selection within a text field.
     static void setSelection(long startIndex, long endIndex);
 
+    // Clears focus and sets this node as the starting point for the next
+    // time the user presses Tab or Shift+Tab.
+    static void setSequentialFocusNavigationStartingPoint();
+
     // Adds a listener for the given event type and event phase.
     static void addEventListener(
         EventType eventType, AutomationListener listener, boolean capture);
 
     // Removes a listener for the given event type and event phase.
     static void removeEventListener(
         EventType eventType, AutomationListener listener, boolean capture);
 
     // Gets the first node in this node's subtree which matches the given CSS
     // selector and is within the same DOM context.
@@ skipping 61 matching lines @@
     // Everything in the tree between the two node/offset pairs gets included
     // in the selection. The anchor is where the user started the selection,
     // while the focus is the point at which the selection gets extended
     // e.g. when dragging with a mouse or using the keyboard. For nodes with
     // the role staticText, the offset gives the character offset within
     // the value where the selection starts or ends, respectively.
     [nocompile] static void setDocumentSelection(
         SetDocumentSelectionParams params);
   };
 };