ash: Rename more Launcher classes to Shelf*.

ash/launcher/launcher_item_delegate_manager.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/launcher/launcher_item_delegate_manager.h"
-
-#include "ash/launcher/launcher_item_delegate.h"
-#include "ash/shelf/shelf_model.h"
-#include "ash/shell.h"
-#include "base/logging.h"
-#include "base/stl_util.h"
-
-namespace ash {
-
-LauncherItemDelegateManager::LauncherItemDelegateManager(ShelfModel* model)
-    : model_(model) {
-  DCHECK(model_);
-  model_->AddObserver(this);
-}
-
-LauncherItemDelegateManager::~LauncherItemDelegateManager() {
-  model_->RemoveObserver(this);
-  STLDeleteContainerPairSecondPointers(id_to_item_delegate_map_.begin(),
-                                       id_to_item_delegate_map_.end());
-}
-
-void LauncherItemDelegateManager::SetLauncherItemDelegate(
-    ash::LauncherID id,
-    scoped_ptr<LauncherItemDelegate> item_delegate) {
-  // If another LauncherItemDelegate is already registered for |id|, we assume
-  // that this request is replacing LauncherItemDelegate for |id| with
-  // |item_delegate|.
-  RemoveLauncherItemDelegate(id);
-  id_to_item_delegate_map_[id] = item_delegate.release();
-}
-
-LauncherItemDelegate* LauncherItemDelegateManager::GetLauncherItemDelegate(
-    ash::LauncherID id) {
-  if (model_->ItemIndexByID(id) != -1) {
-    // Each LauncherItem has to have a LauncherItemDelegate.
-    DCHECK(id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end());
-    return id_to_item_delegate_map_[id];
-  }
-  return NULL;
-}
-
-void LauncherItemDelegateManager::ShelfItemAdded(int index) {
-}
-
-void LauncherItemDelegateManager::ShelfItemRemoved(int index, LauncherID id) {
-  RemoveLauncherItemDelegate(id);
-}
-
-void LauncherItemDelegateManager::ShelfItemMoved(int start_index,
-                                                 int target_index) {
-}
-
-void LauncherItemDelegateManager::ShelfItemChanged(
-    int index,
-    const LauncherItem& old_item) {
-}
-
-void LauncherItemDelegateManager::ShelfStatusChanged() {
-}
-
-void LauncherItemDelegateManager::RemoveLauncherItemDelegate(
-    ash::LauncherID id) {
-  if (id_to_item_delegate_map_.find(id) != id_to_item_delegate_map_.end()) {
-    delete id_to_item_delegate_map_[id];
-    id_to_item_delegate_map_.erase(id);
-  }
-}
-
-}  // namespace ash