[sensors] Make generic_sensor a component

device/generic_sensor/sensor_provider_impl.h

Index: device/generic_sensor/sensor_provider_impl.h
diff --git a/device/generic_sensor/sensor_provider_impl.h b/device/generic_sensor/sensor_provider_impl.h
index 4d8541184fe469d2b4c44d3d0e33d37210ff7fe6..7b9cc65d1d76f7eef06fcf742150d4021cb1abf3 100644
--- a/device/generic_sensor/sensor_provider_impl.h
+++ b/device/generic_sensor/sensor_provider_impl.h
@@ -6,6 +6,7 @@
 #define DEVICE_GENERIC_SENSOR_SENSOR_PROVIDER_IMPL_H_
 
 #include "base/macros.h"
+#include "device/generic_sensor/generic_sensor_export.h"
 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h"
 
 namespace device {
@@ -16,7 +17,8 @@ class PlatformSensor;
 // Implementation of SensorProvider mojo interface.
 // Uses PlatformSensorProvider singleton to create platform specific instances
 // of PlatformSensor which are used by SensorImpl.
-class SensorProviderImpl final : public mojom::SensorProvider {
+class DEVICE_GENERIC_SENSOR_EXPORT SensorProviderImpl final
+    : public mojom::SensorProvider {
  public:
   static void Create(mojom::SensorProviderRequest request);