Some more fixes to cros system tray icons (esp. screen tray items)

ash/common/system/chromeos/screen_security/screen_tray_item.h

 // Copyright 2013 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_CHROMEOS_SCREEN_SECURITY_SCREEN_TRAY_ITEM_H_
 #define ASH_COMMON_SYSTEM_CHROMEOS_SCREEN_SECURITY_SCREEN_TRAY_ITEM_H_
 
 #include <string>
 
 #include "ash/common/system/tray/system_tray.h"
@@ skipping 75 matching lines @@
 
 // The base tray item for screen capture and screen sharing. The
 // Start method brings up a notification and a tray item, and the user
 // can stop the screen capture/sharing by pressing the stop button.
 class ASH_EXPORT ScreenTrayItem : public SystemTrayItem {
  public:
   ScreenTrayItem(SystemTray* system_tray, UmaType uma_type);
   ~ScreenTrayItem() override;
 
   tray::ScreenTrayView* tray_view() { return tray_view_; }
-  void set_tray_view(tray::ScreenTrayView* tray_view) {
-    tray_view_ = tray_view;
-  }
 
   tray::ScreenStatusView* default_view() { return default_view_; }
   void set_default_view(tray::ScreenStatusView* default_view) {
     default_view_ = default_view;
   }
 
   bool is_started() const { return is_started_; }
   void set_is_started(bool is_started) { is_started_ = is_started; }
 
   void Update();
   void Start(const base::Closure& stop_callback);
   void Stop();
 
   // Creates or updates the notification for the tray item.
   virtual void CreateOrUpdateNotification() = 0;
 
   // Returns the id of the notification for the tray item.
   virtual std::string GetNotificationId() = 0;
 
   // Called after Stop() is invoked from the default view.
   virtual void RecordStoppedFromDefaultViewMetric() = 0;
 
   // Called after Stop() is invoked from the notification view.
   virtual void RecordStoppedFromNotificationViewMetric() = 0;
 
   // Overridden from SystemTrayItem.
-  views::View* CreateTrayView(LoginStatus status) override = 0;
+  views::View* CreateTrayView(LoginStatus status) override;
   views::View* CreateDefaultView(LoginStatus status) override = 0;
   void DestroyTrayView() override;
   void DestroyDefaultView() override;
-  void UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) override;
 
  private:
   tray::ScreenTrayView* tray_view_;
   tray::ScreenStatusView* default_view_;
   bool is_started_;
   base::Closure stop_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenTrayItem);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_CHROMEOS_SCREEN_SECURITY_SCREEN_TRAY_ITEM_H_