chromeos: Move files in //ash/common to //ash, part 3

ash/system/tiles/tray_tiles.cc

 // 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.
 
 #include "ash/system/tiles/tray_tiles.h"
 
-#include "ash/common/session/session_state_delegate.h"
-#include "ash/common/wm_shell.h"
 #include "ash/metrics/user_metrics_action.h"
+#include "ash/session/session_state_delegate.h"
 #include "ash/system/tiles/tiles_default_view.h"
+#include "ash/wm_shell.h"
 
 namespace ash {
 
 TrayTiles::TrayTiles(SystemTray* system_tray)
     : SystemTrayItem(system_tray, UMA_NOT_RECORDED), default_view_(nullptr) {}
 
 TrayTiles::~TrayTiles() {}
 
 views::View* TrayTiles::GetHelpButtonView() const {
   if (!default_view_)
@@ skipping 14 matching lines @@
   default_view_ = new TilesDefaultView(this, status);
   default_view_->Init();
   return default_view_;
 }
 
 void TrayTiles::DestroyDefaultView() {
   default_view_ = nullptr;
 }
 
 }  // namespace ash