NOCOMMIT PROTOTYPE [GRC] Tab CPU Usage Observer

services/resource_coordinator/coordination_unit/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/coordination_unit_impl.h"
 
 #include <memory>
 #include <unordered_map>
 #include <utility>
 
 #include "base/strings/string_number_conversions.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/resource_coordinator/public/cpp/coordination_unit_id.h"
 
 namespace resource_coordinator {
 
 namespace {
 
 using CUIDMap = std::unordered_map<CoordinationUnitID, CoordinationUnitImpl*>;
 
 CUIDMap& g_cu_map() {
   static CUIDMap* instance = new CUIDMap();
   return *instance;
 }
 
 }  // namespace
 
-const double CoordinationUnitImpl::kCPUUsageMinimumForTesting = 0.0;
-const double CoordinationUnitImpl::kCPUUsageUnmeasuredForTesting = -1.0;
-
 CoordinationUnitImpl::CoordinationUnitImpl(
     const CoordinationUnitID& id,
     std::unique_ptr<service_manager::ServiceContextRef> service_ref)
     : id_(id.type, id.id) {
   auto it = g_cu_map().insert(std::make_pair(id_, this));
   DCHECK(it.second);  // Inserted successfully
 
   service_ref_ = std::move(service_ref);
 }
 
@@ skipping 217 matching lines @@
   policy_callback_ = std::move(callback);
 
   RecalcCoordinationPolicy();
 }
 
 void CoordinationUnitImpl::UnregisterCoordinationPolicyCallback() {
   policy_callback_.reset();
   current_policy_.reset();
 }
 
-double CoordinationUnitImpl::GetCPUUsageForTesting() {
-  return kCPUUsageUnmeasuredForTesting;
-}
-
 base::Value CoordinationUnitImpl::GetProperty(
     mojom::PropertyType property) const {
   auto value_it = property_store_.find(property);
 
   return value_it != property_store_.end() ? value_it->second : base::Value();
 }
 
 void CoordinationUnitImpl::ClearProperty(mojom::PropertyType property) {
   property_store_.erase(property);
 }
@@ skipping 20 matching lines @@
 }
 
 void CoordinationUnitImpl::WillBeDestroyed() {
   for (auto listener :
        on_will_be_destroyed_event_listeners_.GetListenersWithoutAFilter()) {
     listener.Run(this);
   }
 }
 
 }  // namespace resource_coordinator