Don't fire a FOCUS accessibility event on a View that doesn't have focus.

ui/app_list/views/search_result_list_view.cc

 // Copyright (c) 2012 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_list_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 174 matching lines @@
   if (old_selected >= 0) {
     SearchResultView* selected_view = GetResultViewAt(old_selected);
     selected_view->ClearSelectedAction();
     selected_view->SchedulePaint();
   }
 
   if (new_selected >= 0) {
     SearchResultView* selected_view = GetResultViewAt(new_selected);
     selected_view->ClearSelectedAction();
     selected_view->SchedulePaint();
-    selected_view->NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, true);
+    selected_view->NotifyAccessibilityEvent(ui::AX_EVENT_SELECTION, true);

[sky, 2016/02/14 16:21:52]

I believe this function is always called when the selection changes. In which
case shouldn't notification be unconditional in this function?

[dmazzoni, 2016/02/17 00:25:18]

We need to fire the selection on a particular item, though. Nothing to fire it
on if there are no results.

   }
 }
 
 void SearchResultListView::ForceAutoLaunchForTest() {
   if (auto_launch_animation_)
     AnimationEnded(auto_launch_animation_.get());
 }
 
 void SearchResultListView::Layout() {
   results_container_->SetBoundsRect(GetLocalBounds());
@@ skipping 51 matching lines @@
         view->result(), action_index, event_flags);
   }
 }
 
 void SearchResultListView::OnSearchResultInstalled(SearchResultView* view) {
   if (delegate_ && view->result())
     delegate_->OnResultInstalled(view->result());
 }
 
 }  // namespace app_list