Implement accessible states and notifications for the tab strip.

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 23 matching lines @@
     menuPopupEnd,
     menuPopupStart,
     menuStart,
     rowCollapsed,
     rowCountChanged,
     rowExpanded,
     scrollPositionChanged,
     scrolledToAnchor,
     selectedChildrenChanged,
     selectedTextChanged,
-    selectionChanged,
+    selection,
+    selectionAdd,
+    selectionRemove,
     show,
     textChanged,
     textInserted,
     textRemoved,
+    textSelectionChanged,
     valueChanged
   };
 
   // Describes the purpose of an $(ref:automation.AutomationNode).
   enum RoleType {
     alertDialog,
     alert,
     annotation,
     application,
     article,
@@ skipping 262 matching lines @@
     // tree with a placeholder root node; listen for the "loadComplete" event to
     // get a notification that the tree has fully loaded (the previous root node
     // reference will stop working at or before this point).
     [nocompile] static void getTree(optional long tabId, RootCallback callback);
 
     // Get the automation tree for the whole desktop which consists of all on
     // screen views. Note this API is currently only supported on Chrome OS.
     [nocompile] static void getDesktop(RootCallback callback);
   };
 };