MacViews: Better layering for the touch selection controller

ui/views/views_touch_selection_controller_factory_aura.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 "ui/views/views_touch_selection_controller_factory.h"
+
+#include "ui/base/ui_base_switches_util.h"
+#include "ui/views/touchui/touch_selection_controller_impl.h"
+
+namespace views {
+
+ViewsTouchSelectionControllerFactory::ViewsTouchSelectionControllerFactory() {
+}
+
+ui::TouchSelectionController* ViewsTouchSelectionControllerFactory::create(
+    ui::TouchEditable* client_view) {
+  if (switches::IsTouchEditingEnabled())
+    return new views::TouchSelectionControllerImpl(client_view);
+  return NULL;
+}
+
+}  // namespace views