Revert of Global Resource Coordinator: Basic service internals

services/resource_coordinator/coordination_unit/coordination_unit_provider_impl.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 "services/resource_coordinator/coordination_unit/coordination_unit_provider_impl.h"
-
-#include <memory>
-#include <utility>
-
-#include "base/logging.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-#include "services/resource_coordinator/coordination_unit/coordination_unit_impl.h"
-#include "services/service_manager/public/cpp/service_context_ref.h"
-
-namespace resource_coordinator {
-
-CoordinationUnitProviderImpl::CoordinationUnitProviderImpl(
-    service_manager::ServiceContextRefFactory* service_ref_factory)
-    : service_ref_factory_(service_ref_factory) {
-  DCHECK(service_ref_factory);
-  service_ref_ = service_ref_factory->CreateRef();
-}
-
-CoordinationUnitProviderImpl::~CoordinationUnitProviderImpl() = default;
-
-void CoordinationUnitProviderImpl::CreateCoordinationUnit(
-    mojom::CoordinationUnitRequest request,
-    const CoordinationUnitID& id) {
-  // TODO(oysteine): A strong binding here means the first binding set up
-  // to a CoordinationUnit via CoordinationUnitProvider, i.e. the authoritative
-  // one in terms of setting the context, has to outlive all of the other
-  // connections (as the rest are just duplicated and held within
-  // CoordinationUnit). Make sure this assumption is correct, or refactor into
-  // some kind of refcounted thing.
-
-  // Once there's a need for custom code for various types of CUs (tabs,
-  // processes, etc) then this could become a factory function and instantiate
-  // different subclasses of CoordinationUnitImpl based on the id.type.
-  mojo::MakeStrongBinding(base::MakeUnique<CoordinationUnitImpl>(
-                              id, service_ref_factory_->CreateRef()),
-                          std::move(request));
-};
-
-// static
-void CoordinationUnitProviderImpl::Create(
-    service_manager::ServiceContextRefFactory* service_ref_factory,
-    resource_coordinator::mojom::CoordinationUnitProviderRequest request) {
-  mojo::MakeStrongBinding(
-      base::MakeUnique<CoordinationUnitProviderImpl>(service_ref_factory),
-      std::move(request));
-}
-
-}  // namespace resource_coordinator