mash: Move ShelfWindowWatcher[ItemDelegate] to ash/common.

ash/shelf/shelf_window_watcher_item_delegate.cc

-// 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.
-
-#include "ash/shelf/shelf_window_watcher_item_delegate.h"
-
-#include "ash/common/wm/window_state.h"
-#include "ash/common/wm_window.h"
-#include "ash/shelf/shelf_util.h"
-#include "ui/events/event.h"
-#include "ui/wm/core/window_animations.h"
-
-namespace ash {
-
-ShelfWindowWatcherItemDelegate::ShelfWindowWatcherItemDelegate(WmWindow* window)
-    : window_(window) {}
-
-ShelfWindowWatcherItemDelegate::~ShelfWindowWatcherItemDelegate() {}
-
-ShelfItemDelegate::PerformedAction ShelfWindowWatcherItemDelegate::ItemSelected(
-    const ui::Event& event) {
-  wm::WindowState* window_state = window_->GetWindowState();
-  if (window_state->IsActive()) {
-    if (event.type() & ui::ET_KEY_RELEASED) {
-      window_->Animate(::wm::WINDOW_ANIMATION_TYPE_BOUNCE);
-      return kNoAction;
-    } else {
-      window_state->Minimize();
-      return kExistingWindowMinimized;
-    }
-  } else {
-    window_state->Activate();
-    return kExistingWindowActivated;
-  }
-}
-
-base::string16 ShelfWindowWatcherItemDelegate::GetTitle() {
-  return window_->GetShelfItemDetails()->title;
-}
-
-ShelfMenuModel* ShelfWindowWatcherItemDelegate::CreateApplicationMenu(
-    int event_flags) {
-  return nullptr;
-}
-
-bool ShelfWindowWatcherItemDelegate::IsDraggable() {
-  return true;
-}
-
-bool ShelfWindowWatcherItemDelegate::CanPin() const {
-  return true;
-}
-
-bool ShelfWindowWatcherItemDelegate::ShouldShowTooltip() {
-  return true;
-}
-
-void ShelfWindowWatcherItemDelegate::Close() {
-  window_->CloseWidget();
-}
-
-}  // namespace ash