Support output for Chrome's native find in ChromeVox.

chrome/renderer/extensions/automation_internal_custom_bindings.cc

 // 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.
 
 #include "chrome/renderer/extensions/automation_internal_custom_bindings.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 1199 matching lines @@
   switch (tree_change_observer_overall_filter_) {
     case api::automation::TREE_CHANGE_OBSERVER_FILTER_NOTREECHANGES:
     default:
       return;
     case api::automation::TREE_CHANGE_OBSERVER_FILTER_LIVEREGIONTREECHANGES:
       if (!node->data().HasStringAttribute(ui::AX_ATTR_CONTAINER_LIVE_STATUS) &&
           node->data().role != ui::AX_ROLE_ALERT) {
         return;
       }
       break;
+    case api::automation::TREE_CHANGE_OBSERVER_FILTER_TEXTMARKERCHANGES:
+      if (!node->data().HasIntListAttribute(ui::AX_ATTR_MARKER_TYPES))
+        return;
+      break;
     case api::automation::TREE_CHANGE_OBSERVER_FILTER_ALLTREECHANGES:
       break;
   }
 
   auto iter = axtree_to_tree_cache_map_.find(tree);
   if (iter == axtree_to_tree_cache_map_.end())
     return;
 
   int tree_id = iter->second->tree_id;
 
   v8::Isolate* isolate = GetIsolate();
   v8::HandleScope handle_scope(isolate);
   v8::Context::Scope context_scope(context()->v8_context());
 
   for (const auto& observer : tree_change_observers_) {
     switch (observer.filter) {
       case api::automation::TREE_CHANGE_OBSERVER_FILTER_NOTREECHANGES:
       default:
         continue;
       case api::automation::TREE_CHANGE_OBSERVER_FILTER_LIVEREGIONTREECHANGES:
         if (!node->data().HasStringAttribute(
                 ui::AX_ATTR_CONTAINER_LIVE_STATUS) &&
             node->data().role != ui::AX_ROLE_ALERT) {
           continue;
         }
         break;
+      case api::automation::TREE_CHANGE_OBSERVER_FILTER_TEXTMARKERCHANGES:
+        if (!node->data().HasIntListAttribute(ui::AX_ATTR_MARKER_TYPES))
+          continue;
+        break;
       case api::automation::TREE_CHANGE_OBSERVER_FILTER_ALLTREECHANGES:
         break;
     }
 
     v8::Local<v8::Array> args(v8::Array::New(GetIsolate(), 4U));
     args->Set(0U, v8::Integer::New(GetIsolate(), observer.id));
     args->Set(1U, v8::Integer::New(GetIsolate(), tree_id));
     args->Set(2U, v8::Integer::New(GetIsolate(), node->id()));
     args->Set(3U, CreateV8String(isolate, ToString(change_type)));
     context()->DispatchEvent("automationInternal.onTreeChange", args);
@@ skipping 32 matching lines @@
   v8::Local<v8::Array> args(v8::Array::New(GetIsolate(), 2U));
   args->Set(0U, v8::Integer::New(GetIsolate(), tree_id));
   v8::Local<v8::Array> nodes(v8::Array::New(GetIsolate(), ids.size()));
   args->Set(1U, nodes);
   for (size_t i = 0; i < ids.size(); ++i)
     nodes->Set(i, v8::Integer::New(GetIsolate(), ids[i]));
   context()->DispatchEvent("automationInternal.onNodesRemoved", args);
 }
 
 }  // namespace extensions