Revert of Global Resource Coordinator: Basic service internals

services/resource_coordinator/public/cpp/coordination_unit_id.h

-// 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 SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_ID_H_
-#define SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_ID_H_
-
-#include <string>
-
-#include "services/resource_coordinator/public/cpp/coordination_unit_types.h"
-#include "services/resource_coordinator/public/cpp/resource_coordinator_export.h"
-
-namespace resource_coordinator {
-
-// This is a native struct rather than a mojom struct as we eventually want
-// to annotate base::TaskRunner with CUs for cost attribution purses and
-// would like to move it to base/ as easily as possible at that point.
-struct SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_EXPORT CoordinationUnitID {
-  CoordinationUnitID();
-  CoordinationUnitID(const CoordinationUnitType& type,
-                     const std::string& new_id);
-
-  bool operator==(const CoordinationUnitID& b) const {
-    return id == b.id && type == b.type;
-  }
-
-  int64_t id;
-  CoordinationUnitType type;
-};
-
-}  // resource_coordinator
-
-namespace std {
-
-template <>
-struct hash<resource_coordinator::CoordinationUnitID> {
-  uint64_t operator()(
-      const resource_coordinator::CoordinationUnitID& id) const {
-    return ((static_cast<uint64_t>(id.type)) << 32) | id.id;
-  }
-};
-
-}  // namespace std
-
-#endif  // SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_ID_H_