Refactors DockedWindowLayoutManager in terms of ash/wm/common

ash/system/cast/tray_cast.h

 // Copyright 2015 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_SYSTEM_CAST_TRAY_CAST_H_
 #define ASH_SYSTEM_CAST_TRAY_CAST_H_
 
 #include "ash/cast_config_delegate.h"
 #include "ash/shell_observer.h"
 #include "ash/system/tray/system_tray_item.h"
@@ skipping 25 matching lines @@
   const views::View* GetDefaultView() const;
   enum ChildViewId { TRAY_VIEW = 1, SELECT_VIEW, CAST_VIEW };
 
   // Overridden from SystemTrayItem.
   views::View* CreateTrayView(user::LoginStatus status) override;
   views::View* CreateDefaultView(user::LoginStatus status) override;
   views::View* CreateDetailedView(user::LoginStatus status) override;
   void DestroyTrayView() override;
   void DestroyDefaultView() override;
   void DestroyDetailedView() override;
-  void UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) override;
+  void UpdateAfterShelfAlignmentChange(wm::ShelfAlignment alignment) override;
 
   // Overridden from ShellObserver.
   void OnCastingSessionStartedOrStopped(bool started) override;
 
   // Overridden from CastConfigDelegate::Observer.
   void OnDevicesUpdated(
       const CastConfigDelegate::ReceiversAndActivities& devices) override;
 
   // Returns true if the cast extension was detected.
   bool HasCastExtension();
@@ skipping 14 matching lines @@
   tray::CastTrayView* tray_ = nullptr;
   tray::CastDuplexView* default_ = nullptr;
   tray::CastDetailedView* detailed_ = nullptr;
 
   DISALLOW_COPY_AND_ASSIGN(TrayCast);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CAST_TRAY_CAST_H_