[GRC] Process Coordination Unit support for Global Resource Controller

services/resource_coordinator/coordination_unit/process_coordination_unit_impl_unittest.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 "base/process/process_handle.h"
+#include "base/run_loop.h"
+#include "services/resource_coordinator/coordination_unit/coordination_unit_factory.h"
+#include "services/resource_coordinator/coordination_unit/coordination_unit_impl.h"
+#include "services/resource_coordinator/coordination_unit/coordination_unit_impl_unittest_util.h"
+#include "services/resource_coordinator/public/cpp/coordination_unit_id.h"
+#include "services/resource_coordinator/public/cpp/coordination_unit_types.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace resource_coordinator {
+
+namespace {
+
+class ProcessCoordinationUnitImplTest : public CoordinationUnitImplTestBase {};
+
+}  // namespace
+
+TEST_F(ProcessCoordinationUnitImplTest, MeasureCPUUsage) {
+  base::ProcessId current_pid = base::GetCurrentProcId();
+  CoordinationUnitID cu_id(CoordinationUnitType::kProcess, current_pid);
+
+  std::unique_ptr<CoordinationUnitImpl> coordination_unit_ =
+      coordination_unit_factory::CreateCoordinationUnit(
+          cu_id, service_context_ref_factory()->CreateRef());
+
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_LE(0.0, coordination_unit_->GetCPUUsageForTesting());
+}
+
+}  // namespace resource_coordinator