Revert of [GRC] Process Coordination Unit support for Global Resource Controller

services/resource_coordinator/coordination_unit/process_coordination_unit_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/process_coordination_unit_impl.h"
-
-#include <memory>
-#include <utility>
-
-#include "base/process/process_handle.h"
-#include "base/process/process_metrics.h"
-#include "base/time/time.h"
-
-#if defined(OS_MACOSX)
-#include "services/service_manager/public/cpp/standalone_service/mach_broker.h"
-#endif
-
-namespace service_manager {
-class ServiceContextRef;
-}
-
-namespace resource_coordinator {
-
-struct CoordinationUnitID;
-
-namespace {
-
-const int kCPUProfilingIntervalInSeconds = 5;
-
-}  // namespace
-
-ProcessCoordinationUnitImpl::ProcessCoordinationUnitImpl(
-    const CoordinationUnitID& id,
-    std::unique_ptr<service_manager::ServiceContextRef> service_ref)
-    : CoordinationUnitImpl(id, std::move(service_ref)), cpu_usage_(-1.0) {
-  // ProcessCoordinationUnit ids should correspond to its pid
-  base::ProcessHandle pid = id.id;
-
-#if defined(OS_MACOSX)
-  process_metrics_ = base::ProcessMetrics::CreateProcessMetrics(
-      pid, service_manager::MachBroker::GetInstance()->port_provider());
-#else
-  process_metrics_ = base::ProcessMetrics::CreateProcessMetrics(pid);
-#endif
-
-  repeating_timer_.Start(FROM_HERE, base::TimeDelta(), this,
-                         &ProcessCoordinationUnitImpl::MeasureProcessCPUUsage);
-}
-
-ProcessCoordinationUnitImpl::~ProcessCoordinationUnitImpl() = default;
-
-void ProcessCoordinationUnitImpl::MeasureProcessCPUUsage() {
-  cpu_usage_ = process_metrics_->GetPlatformIndependentCPUUsage();
-
-  repeating_timer_.Start(
-      FROM_HERE, base::TimeDelta::FromSeconds(kCPUProfilingIntervalInSeconds),
-      this, &ProcessCoordinationUnitImpl::MeasureProcessCPUUsage);
-}
-
-double ProcessCoordinationUnitImpl::GetCPUUsageForTesting() {
-  return cpu_usage_;
-}
-
-}  // namespace resource_coordinator