Revert of Added common layout framework for system menu rows.

ash/common/system/tray/tray_popup_layout_factory.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 "ash/common/system/tray/tray_popup_layout_factory.h"
-
-#include "ash/common/material_design/material_design_controller.h"
-#include "ash/common/system/tray/three_view_layout.h"
-#include "ash/common/system/tray/tray_constants.h"
-#include "ui/views/controls/button/label_button.h"
-#include "ui/views/layout/box_layout.h"
-
-namespace ash {
-
-namespace {
-
-// Creates a layout manager that positions Views vertically. The Views will be
-// stretched horizontally and centered vertically.
-std::unique_ptr<views::LayoutManager> CreateDefaultCenterLayoutManager() {
-  // TODO(bruthig): Use constants instead of magic numbers.
-  views::BoxLayout* box_layout =
-      new views::BoxLayout(views::BoxLayout::kVertical, 4, 8, 4);
-  box_layout->set_main_axis_alignment(
-      views::BoxLayout::MAIN_AXIS_ALIGNMENT_CENTER);
-  box_layout->set_cross_axis_alignment(
-      views::BoxLayout::CROSS_AXIS_ALIGNMENT_STRETCH);
-  return std::unique_ptr<views::LayoutManager>(box_layout);
-}
-
-// Creates a layout manager that positions Views horizontally. The Views will be
-// centered along the horizontal and vertical axis.
-std::unique_ptr<views::LayoutManager> CreateDefaultEndsLayoutManager() {
-  views::BoxLayout* box_layout =
-      new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 0);
-  box_layout->set_main_axis_alignment(
-      views::BoxLayout::MAIN_AXIS_ALIGNMENT_CENTER);
-  box_layout->set_cross_axis_alignment(
-      views::BoxLayout::CROSS_AXIS_ALIGNMENT_CENTER);
-  return std::unique_ptr<views::LayoutManager>(box_layout);
-}
-
-}  // namespace
-
-ThreeViewLayout* TrayPopupLayoutFactory::InstallDefaultLayout(
-    views::View* host) {
-  ThreeViewLayout* layout = new ThreeViewLayout(0 /* padding_between_items */);
-
-  // TODO(bruthig): views::BoxLayout::SetFlexForView() fails on a DCHECK() if it
-  // has not yet been installed on a View. Evaluate whether this is necessary or
-  // if it can be removed. This would allow us to drop the |host| parameter from
-  // this function.
-  host->SetLayoutManager(layout);
-
-  layout->SetInsets(gfx::Insets(0, GetTrayConstant(TRAY_POPUP_ITEM_LEFT_INSET),
-                                0,
-                                GetTrayConstant(TRAY_POPUP_ITEM_RIGHT_INSET)));
-  layout->SetMinCrossAxisSize(GetTrayConstant(TRAY_POPUP_ITEM_HEIGHT));
-
-  ConfigureDefaultLayout(layout, ThreeViewLayout::Container::START);
-  ConfigureDefaultLayout(layout, ThreeViewLayout::Container::CENTER);
-  ConfigureDefaultLayout(layout, ThreeViewLayout::Container::END);
-
-  return layout;
-}
-
-void TrayPopupLayoutFactory::ConfigureDefaultLayout(
-    ThreeViewLayout* layout,
-    ThreeViewLayout::Container container) {
-  switch (container) {
-    case ThreeViewLayout::Container::START:
-      layout->SetLayoutManager(ThreeViewLayout::Container::START,
-                               CreateDefaultEndsLayoutManager());
-      layout->SetMinSize(
-          ThreeViewLayout::Container::START,
-          gfx::Size(GetTrayConstant(TRAY_POPUP_ITEM_MIN_START_WIDTH), 0));
-      break;
-    case ThreeViewLayout::Container::CENTER:
-      layout->SetLayoutManager(ThreeViewLayout::Container::CENTER,
-                               CreateDefaultCenterLayoutManager());
-      layout->SetFlexForContainer(ThreeViewLayout::Container::CENTER, 1.f);
-      break;
-    case ThreeViewLayout::Container::END:
-      layout->SetLayoutManager(ThreeViewLayout::Container::END,
-                               CreateDefaultEndsLayoutManager());
-      layout->SetMinSize(
-          ThreeViewLayout::Container::END,
-          gfx::Size(GetTrayConstant(TRAY_POPUP_ITEM_MIN_END_WIDTH), 0));
-      break;
-  }
-}
-
-}  // namespace ash