Revert "chromeos: Move files in //ash/common to //ash, part 1"

ash/system/tray/system_tray_item.cc

Index: ash/system/tray/system_tray_item.cc
diff --git a/ash/system/tray/system_tray_item.cc b/ash/system/tray/system_tray_item.cc
deleted file mode 100644
index ac6dde267d3a366c560bb9d6c3efa8b4521efbb6..0000000000000000000000000000000000000000
--- a/ash/system/tray/system_tray_item.cc
+++ /dev/null
@@ -1,68 +0,0 @@
-// Copyright (c) 2012 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/tray/system_tray_item.h"
-
-#include "ash/system/tray/system_tray.h"
-#include "ash/system/tray/system_tray_delegate.h"
-#include "ash/system/tray/tray_constants.h"
-#include "base/timer/timer.h"
-#include "ui/views/view.h"
-
-namespace ash {
-
-SystemTrayItem::SystemTrayItem(SystemTray* system_tray, UmaType uma_type)
-    : system_tray_(system_tray), uma_type_(uma_type), restore_focus_(false) {}
-
-SystemTrayItem::~SystemTrayItem() {}
-
-views::View* SystemTrayItem::CreateTrayView(LoginStatus status) {
-  return nullptr;
-}
-
-views::View* SystemTrayItem::CreateDefaultView(LoginStatus status) {
-  return nullptr;
-}
-
-views::View* SystemTrayItem::CreateDetailedView(LoginStatus status) {
-  return nullptr;
-}
-
-void SystemTrayItem::DestroyTrayView() {}
-
-void SystemTrayItem::DestroyDefaultView() {}
-
-void SystemTrayItem::DestroyDetailedView() {}
-
-void SystemTrayItem::TransitionDetailedView() {
-  transition_delay_timer_.Start(
-      FROM_HERE,
-      base::TimeDelta::FromMilliseconds(kTrayDetailedViewTransitionDelayMs),
-      base::Bind(&SystemTray::ShowDetailedView, base::Unretained(system_tray()),
-                 this, 0, true, BUBBLE_USE_EXISTING));
-}
-
-void SystemTrayItem::UpdateAfterLoginStatusChange(LoginStatus status) {}
-
-void SystemTrayItem::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
-}
-
-void SystemTrayItem::PopupDetailedView(int for_seconds, bool activate) {
-  system_tray()->ShowDetailedView(this, for_seconds, activate,
-                                  BUBBLE_CREATE_NEW);
-}
-
-void SystemTrayItem::SetDetailedViewCloseDelay(int for_seconds) {
-  system_tray()->SetDetailedViewCloseDelay(for_seconds);
-}
-
-void SystemTrayItem::HideDetailedView(bool animate) {
-  system_tray()->HideDetailedView(this, animate);
-}
-
-bool SystemTrayItem::ShouldShowShelf() const {
-  return true;
-}
-
-}  // namespace ash