[sensors] Drop DEVICE_SENSOR_EXPORT macro

device/generic_sensor/sensor_provider_impl.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_SENSOR_PROVIDER_IMPL_H_
 #define DEVICE_GENERIC_SENSOR_SENSOR_PROVIDER_IMPL_H_
 
 #include "base/macros.h"
 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h"
-#include "device/generic_sensor/sensor_export.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace device {
 
 class PlatformSensorProvider;
 
 // 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 {
  public:
-  DEVICE_SENSOR_EXPORT static void Create(
-      mojo::InterfaceRequest<mojom::SensorProvider> request);
+  static void Create(mojo::InterfaceRequest<mojom::SensorProvider> request);
 
   ~SensorProviderImpl() override;
 
  private:
   SensorProviderImpl(mojo::InterfaceRequest<mojom::SensorProvider> request,
                      PlatformSensorProvider* provider);
 
   // SensorProvider implementation.
   void GetSensor(mojom::SensorType type,
                  mojom::SensorRequest sensor_request,
                  const GetSensorCallback& callback) override;
 
   mojo::StrongBinding<mojom::SensorProvider> binding_;
   PlatformSensorProvider* provider_;
   DISALLOW_COPY_AND_ASSIGN(SensorProviderImpl);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GENERIC_SENSOR_SENSOR_PROVIDER_IMPL_H_