Revert of "Added common layout framework for system menu rows."

ui/views/test/test_layout_manager.cc

-// 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.
-
-#include "ui/views/test/test_layout_manager.h"
-
-namespace views {
-namespace test {
-
-TestLayoutManager::TestLayoutManager() {}
-
-TestLayoutManager::~TestLayoutManager() {}
-
-void TestLayoutManager::Layout(View* host) {}
-
-gfx::Size TestLayoutManager::GetPreferredSize(const View* host) const {
-  return preferred_size_;
-}
-
-int TestLayoutManager::GetPreferredHeightForWidth(const View* host,
-                                                  int width) const {
-  return preferred_height_for_width_;
-}
-
-}  // namespace test
-}  // namespace views