Use mojo app list interfaces for mash and classic ash.

ash/test/test_app_list_view_presenter_impl.h

+// Copyright 2016 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.
+
+#ifndef ASH_TEST_TEST_APP_LIST_VIEW_PRESENTER_IMPL_H_
+#define ASH_TEST_TEST_APP_LIST_VIEW_PRESENTER_IMPL_H_
+
+#include "ash/ash_export.h"
+#include "base/macros.h"
+#include "ui/app_list/presenter/app_list_presenter_impl.h"
+
+namespace ash {
+namespace test {
+
+// An app list presenter impl subclass that presents a no-op test app list view.
+// Some tests rely on the presenter and delegate implementations' behavior.
+class TestAppListViewPresenterImpl : public app_list::AppListPresenterImpl {
+ public:
+  TestAppListViewPresenterImpl();
+  ~TestAppListViewPresenterImpl() override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestAppListViewPresenterImpl);
+};
+
+}  // namespace test
+}  // namespace ash
+
+#endif  // ASH_TEST_TEST_APP_LIST_VIEW_PRESENTER_IMPL_H_