Keep track of accessibility focus across windows.

ui/app_list/views/search_result_actions_view.cc

 // Copyright 2013 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 "ui/app_list/views/search_result_actions_view.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 36 matching lines @@
   // Clamp |action_index| in [-1, child_count()].
   action_index = std::min(child_count(), std::max(-1, action_index));
 
   if (selected_action_ == action_index)
     return;
 
   selected_action_ = action_index;
   SchedulePaint();
 
   if (IsValidActionIndex(selected_action_)) {
-    child_at(selected_action_)->NotifyAccessibilityEvent(
-        ui::AX_EVENT_FOCUS, true);
+    child_at(selected_action_)
+        ->NotifyAccessibilityEvent(ui::AX_EVENT_HOVER, true);
   }
 }
 
 bool SearchResultActionsView::IsValidActionIndex(int action_index) const {
   return action_index >= 0 && action_index < child_count();
 }
 
 void SearchResultActionsView::CreateImageButton(
     const SearchResult::Action& action) {
   views::ImageButton* button = new views::ImageButton(this);
@@ skipping 32 matching lines @@
                                             const ui::Event& event) {
   if (!delegate_)
     return;
 
   const int index = GetIndexOf(sender);
   DCHECK_NE(-1, index);
   delegate_->OnSearchResultActionActivated(index, event.flags());
 }
 
 }  // namespace app_list