ash: Rename AppLaunchId to ShelfID.

ash/public/cpp/app_launch_id.cc

-// Copyright 2017 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/public/cpp/app_launch_id.h"
-
-#include "base/logging.h"
-
-namespace ash {
-
-AppLaunchId::AppLaunchId(const std::string& app_id,
-                         const std::string& launch_id)
-    : app_id(app_id), launch_id(launch_id) {
-  DCHECK(launch_id.empty() || !app_id.empty()) << "launch ids require app ids.";
-}
-
-AppLaunchId::AppLaunchId(const std::string& app_id) : app_id(app_id) {}
-
-AppLaunchId::AppLaunchId() = default;
-
-AppLaunchId::~AppLaunchId() = default;
-
-AppLaunchId::AppLaunchId(const AppLaunchId& other) = default;
-
-AppLaunchId::AppLaunchId(AppLaunchId&& other) = default;
-
-AppLaunchId& AppLaunchId::operator=(const AppLaunchId& other) = default;
-
-bool AppLaunchId::operator==(const AppLaunchId& other) const {
-  return app_id == other.app_id && launch_id == other.launch_id;
-}
-
-bool AppLaunchId::operator!=(const AppLaunchId& other) const {
-  return !(*this == other);
-}
-
-bool AppLaunchId::operator<(const AppLaunchId& other) const {
-  return app_id < other.app_id ||
-         (app_id == other.app_id && launch_id < other.launch_id);
-}
-
-bool AppLaunchId::IsNull() const {
-  return app_id.empty() && launch_id.empty();
-}
-
-}  // namespace ash