Implement all system menu title row buttons for Ash MD

ash/common/system/tiles/tiles_default_view.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_COMMON_SYSTEM_TILES_TILES_DEFAULT_VIEW_H_
 #define ASH_COMMON_SYSTEM_TILES_TILES_DEFAULT_VIEW_H_
 
+#include "ash/common/login_status.h"
 #include "ash/common/system/chromeos/shutdown_policy_observer.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/view.h"
 
 namespace ash {
+class SystemMenuButton;
 class SystemTrayItem;
 
 // The container view for the tiles in the bottom row of the system menu
 // (settings, help, lock, and power).
 class TilesDefaultView : public views::View,
                          public views::ButtonListener,
                          public ShutdownPolicyObserver {
  public:
-  explicit TilesDefaultView(SystemTrayItem* owner);
+  TilesDefaultView(SystemTrayItem* owner, LoginStatus login);
   ~TilesDefaultView() override;
 
   // Sets the layout manager and child views of |this|.
   // TODO(tdanderson|bruthig): Consider moving the layout manager
   // setup code to a location which can be shared by other system menu rows.
   void Init();
 
   // views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   // ShutdownPolicyObserver:
   void OnShutdownPolicyChanged(bool reboot_on_shutdown) override;
 
  private:
   // Helper function to add a separator line between two tiles.
   // TODO(tdanderson|bruthig): Consider moving this to a location which can be
   // shared by other system menu rows.
   void AddSeparator();
 
   SystemTrayItem* owner_;
 
+  LoginStatus login_;
+
   // Pointers to the child buttons of |this|. Note that some buttons may not
   // exist (depending on the user's current login status, for instance), in
   // which case the corresponding pointer will be null.
-  views::Button* settings_button_;
-  views::Button* help_button_;
-  views::Button* lock_button_;
-  views::Button* power_button_;
+  SystemMenuButton* settings_button_;

[bruthig, 2016/10/19 15:43:09]

Can these be typed as CustomButton?

[tdanderson, 2016/10/19 19:49:31]

Done.

+  SystemMenuButton* help_button_;
+  SystemMenuButton* lock_button_;
+  SystemMenuButton* power_button_;
 
   base::WeakPtrFactory<TilesDefaultView> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TilesDefaultView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TILES_TILES_DEFAULT_VIEW_H_