[sensors](Linux) Fix tsan data race in sensor reader

device/generic_sensor/platform_sensor_provider_linux.h

 // 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.
 
 #ifndef DEVICE_GENERIC_SENSOR_PUBLIC_PLATFORM_SENSOR_PROVIDER_LINUX_H_
 #define DEVICE_GENERIC_SENSOR_PUBLIC_PLATFORM_SENSOR_PROVIDER_LINUX_H_
 
 #include "device/generic_sensor/platform_sensor_provider.h"
 
 #include "device/generic_sensor/linux/sensor_device_manager.h"
@@ skipping 39 matching lines @@
 
   using SensorDeviceMap =
       std::unordered_map<mojom::SensorType, std::unique_ptr<SensorInfoLinux>>;
 
   PlatformSensorProviderLinux();
 
   void SensorDeviceFound(
       mojom::SensorType type,
       mojo::ScopedSharedBufferMapping mapping,
       const PlatformSensorProviderBase::CreateSensorCallback& callback,
-      SensorInfoLinux* sensor_device);
+      const SensorInfoLinux* sensor_device);
 
   bool StartPollingThread();
 
   // Stops a polling thread if there are no sensors left. Must be called on
   // a different than the polling thread which allows I/O.
   void StopPollingThread();
 
   // Shuts down a service that tracks events from iio subsystem.
   void Shutdown();
 
@@ skipping 40 matching lines @@
   // provider to stop a polling thread and passed to a manager that
   // runs a linux device monitor service on this task runner.
   scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformSensorProviderLinux);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GENERIC_SENSOR_PUBLIC_PLATFORM_SENSOR_PROVIDER_LINUX_H_