ash: Rename AppLaunchId to ShelfID.

ash/public/cpp/app_launch_id.h

Index: ash/public/cpp/app_launch_id.h
diff --git a/ash/public/cpp/app_launch_id.h b/ash/public/cpp/app_launch_id.h
deleted file mode 100644
index b725840c59d5a8a68487858de203d15d7619c92c..0000000000000000000000000000000000000000
--- a/ash/public/cpp/app_launch_id.h
+++ /dev/null
@@ -1,47 +0,0 @@
-// 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.
-
-#ifndef ASH_PUBLIC_CPP_APP_LAUNCH_ID_H_
-#define ASH_PUBLIC_CPP_APP_LAUNCH_ID_H_
-
-#include <string>
-
-#include "ash/public/cpp/ash_public_export.h"
-
-namespace ash {
-
-// A unique shelf item id composed of an |app_id| and a |launch_id|.
-// |app_id| is the non-empty application id associated with a set of windows.
-// |launch_id| is passed on app launch, to support multiple shelf items per app.
-// As an example, a remote desktop client may want each remote application to
-// have its own icon.
-class ASH_PUBLIC_EXPORT AppLaunchId {
- public:
-  AppLaunchId(const std::string& app_id, const std::string& launch_id);
-  // Creates an AppLaunchId with an empty |launch_id|.
-  explicit AppLaunchId(const std::string& app_id);
-  // Empty constructor for pre-allocating.
-  AppLaunchId();
-  ~AppLaunchId();
-
-  AppLaunchId(const AppLaunchId& other);
-  AppLaunchId(AppLaunchId&& other);
-  AppLaunchId& operator=(const AppLaunchId& other);
-  bool operator==(const AppLaunchId& other) const;
-  bool operator!=(const AppLaunchId& other) const;
-  bool operator<(const AppLaunchId& other) const;
-
-  // Returns true if both the application id and launch id are empty.
-  // This is often used to determine if the id is invalid.
-  bool IsNull() const;
-
-  // The application id associated with a set of windows.
-  std::string app_id;
-  // An id passed on app launch, to support multiple shelf items per app.
-  std::string launch_id;
-};
-
-}  // namespace ash
-
-#endif  // ASH_PUBLIC_CPP_APP_LAUNCH_ID_H_