Move yet more from WmShell to Shell

ash/common/system/chromeos/media_security/multi_profile_media_tray_item.cc

 // Copyright 2014 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/chromeos/media_security/multi_profile_media_tray_item.h"
 
 #include "ash/common/ash_view_ids.h"
 #include "ash/common/media_controller.h"
 #include "ash/common/session/session_controller.h"
 #include "ash/common/system/tray/system_tray_notifier.h"
@@ skipping 22 matching lines @@
     set_id(VIEW_ID_MEDIA_TRAY_VIEW);
   }
 
   ~MultiProfileMediaTrayView() override {
     Shell::Get()->media_controller()->RemoveObserver(this);
   }
 
   // MediaCaptureObserver:
   void OnMediaCaptureChanged(
       const std::vector<mojom::MediaCaptureState>& capture_states) override {
-    SessionController* controller = WmShell::Get()->session_controller();
+    SessionController* controller = Shell::Get()->session_controller();
     // The user at 0 is the current desktop user.
     for (UserIndex index = 1; index < controller->NumberOfLoggedInUsers();
          ++index) {
       if (capture_states[index] != mojom::MediaCaptureState::NONE) {
         SetVisible(true);
         return;
       }
     }
     SetVisible(false);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MultiProfileMediaTrayView);
 };
 
 }  // namespace tray
 
 MultiProfileMediaTrayItem::MultiProfileMediaTrayItem(SystemTray* system_tray)
     : SystemTrayItem(system_tray, UMA_MULTI_PROFILE_MEDIA) {}
 
 MultiProfileMediaTrayItem::~MultiProfileMediaTrayItem() {}
 
 views::View* MultiProfileMediaTrayItem::CreateTrayView(LoginStatus status) {
   return new tray::MultiProfileMediaTrayView(this);
 }
 
 }  // namespace ash