[sensors](CrOS/Linux) Rename SensorDeviceManager cc and h files.

device/generic_sensor/platform_sensor_provider_linux.cc

Index: device/generic_sensor/platform_sensor_provider_linux.cc
diff --git a/device/generic_sensor/platform_sensor_provider_linux.cc b/device/generic_sensor/platform_sensor_provider_linux.cc
index 6451fa3029d8957d0cec7bca898811a8a3d976a1..736c82ff55ab9dbfbf79dc45af2c28867d78915f 100644
--- a/device/generic_sensor/platform_sensor_provider_linux.cc
+++ b/device/generic_sensor/platform_sensor_provider_linux.cc
@@ -202,7 +202,7 @@ void PlatformSensorProviderLinux::OnDeviceRemoved(
     const std::string& device_node) {
   DCHECK(CalledOnValidThread());
   auto it = sensor_devices_by_type_.find(type);
-  if (it == sensor_devices_by_type_.end() &&
+  if (it != sensor_devices_by_type_.end() &&
       it->second->device_node == device_node)
     sensor_devices_by_type_.erase(it);
 }