[Sensors] Improvements in shared buffer managing

device/generic_sensor/fake_platform_sensor.cc

 // Copyright 2016 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 "device/generic_sensor/fake_platform_sensor.h"
 
 namespace device {
 
-FakePlatformSensor::FakePlatformSensor(mojom::SensorType type,
-                                       mojo::ScopedSharedBufferMapping mapping,
-                                       uint64_t buffer_size,
-                                       PlatformSensorProvider* provider)
-    : PlatformSensor(type, std::move(mapping), provider), started_(false) {}
+FakePlatformSensor::FakePlatformSensor(
+    mojom::SensorType type,
+    mojo::ScopedSharedBufferMapping mapping,
+    PlatformSensorProvider* provider,
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner)
+    : PlatformSensor(type,
+                     std::move(mapping),
+                     provider,
+                     std::move(task_runner)),
+      started_(false) {}
 
 FakePlatformSensor::~FakePlatformSensor() = default;
 
 mojom::ReportingMode FakePlatformSensor::GetReportingMode() {
   return mojom::ReportingMode::CONTINUOUS;
 }
 
 PlatformSensorConfiguration FakePlatformSensor::GetDefaultConfiguration() {
   return PlatformSensorConfiguration();
 }
 
 bool FakePlatformSensor::StartSensor(
     const PlatformSensorConfiguration& configuration) {
   config_ = configuration;
   started_ = true;
   return started_;
 }
 
 void FakePlatformSensor::StopSensor() {
   started_ = false;
 }
 
 bool FakePlatformSensor::CheckSensorConfiguration(
     const PlatformSensorConfiguration& configuration) {
   return configuration.frequency() <= kMaxFrequencyValueForTests;
 }
 
 }  // namespace device