Adds sizing, maximizing, minimizing to simple_wm

mash/simple_wm/simple_wm.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 MASH_SIMPLE_WM_SIMPLE_WM_H_
 #define MASH_SIMPLE_WM_SIMPLE_WM_H_
 
 #include <memory>
 #include <utility>
 
@@ skipping 34 matching lines @@
  public:
   SimpleWM();
   ~SimpleWM() override;
 
  private:
   class DisplayLayoutManager;
   class FrameView;
   class WindowListModel;
   class WindowListModelObserver;
   class WindowListView;
+  class WorkspaceLayoutManager;
 
   // service_manager::Service:
   void OnStart() override;
   bool OnConnect(const service_manager::ServiceInfo& remote_info,
                  service_manager::InterfaceRegistry* registry) override;
 
   // aura::WindowTreeClientDelegate:
   void OnEmbed(
       std::unique_ptr<aura::WindowTreeHostMus> window_tree_host) override;
   void OnLostConnection(aura::WindowTreeClient* client) override;
@@ skipping 41 matching lines @@
   aura::test::TestFocusClient focus_client_;
   std::unique_ptr<aura::WindowTreeHostMus> window_tree_host_;
   aura::Window* display_root_ = nullptr;
   aura::Window* window_root_ = nullptr;
   aura::WindowManagerClient* window_manager_client_ = nullptr;
   std::unique_ptr<aura::WindowTreeClient> window_tree_client_;
   std::unique_ptr<ui::Gpu> gpu_;
   std::unique_ptr<aura::MusContextFactory> compositor_context_factory_;
   std::map<aura::Window*, FrameView*> client_window_to_frame_view_;
   std::unique_ptr<WindowListModel> window_list_model_;
+  std::unique_ptr<WorkspaceLayoutManager> workspace_layout_manager_;
 
   bool started_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(SimpleWM);
 };
 
 }  // namespace simple_wm
 
 #endif  // MASH_SIMPLE_WM_SIMPLE_WM_H_