Implementation of CSS3 nav-up/down/left/right properties from CSS3 UI

third_party/WebKit/Source/core/input/EventHandler.cpp

Index: third_party/WebKit/Source/core/input/EventHandler.cpp
diff --git a/third_party/WebKit/Source/core/input/EventHandler.cpp b/third_party/WebKit/Source/core/input/EventHandler.cpp
index b403fece842dd9db1936cd69c995f145a588a97b..277aca1214115f0d87252b98a50305dd9b099405 100644
--- a/third_party/WebKit/Source/core/input/EventHandler.cpp
+++ b/third_party/WebKit/Source/core/input/EventHandler.cpp
@@ -2,6 +2,8 @@
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
+ * Copyright (C) 2014 Opera Software ASA. All rights reserved.
+ * Copyright (C) 2016 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -3468,6 +3470,11 @@ void EventHandler::defaultArrowEventHandler(WebFocusType focusType, KeyboardEven
     if (m_frame->document()->inDesignMode())
         return;
 
+    if (page->focusController().advanceCSSNavigationFocus(focusType)) {
+        event->setDefaultHandled();
+        return;
+    }
+
     if (page->focusController().advanceFocus(focusType))
         event->setDefaultHandled();
 }