[sensors] Make generic_sensor a component

device/generic_sensor/platform_sensor.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_PLATFORM_SENSOR_H_
 #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_
 
 #include <list>
 #include <map>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
+#include "device/generic_sensor/generic_sensor_export.h"
 #include "device/generic_sensor/public/cpp/sensor_reading.h"
 #include "device/generic_sensor/public/interfaces/sensor.mojom.h"
 #include "mojo/public/cpp/system/buffer.h"
 
 namespace device {
 
 class PlatformSensorProvider;
 class PlatformSensorConfiguration;
 
 // Base class for the sensors provided by the platform. Concrete instances of
 // this class are created by platform specific PlatformSensorProvider.
-class PlatformSensor : public base::RefCountedThreadSafe<PlatformSensor> {
+class DEVICE_GENERIC_SENSOR_EXPORT PlatformSensor
+    : public base::RefCountedThreadSafe<PlatformSensor> {
  public:
   // The interface that must be implemented by PlatformSensor clients.
   class Client {
    public:
     virtual void OnSensorReadingChanged() = 0;
     virtual void OnSensorError() = 0;
     virtual bool IsNotificationSuspended() = 0;
 
    protected:
     virtual ~Client() {}
@@ skipping 51 matching lines @@
   base::ObserverList<Client, true> clients_;
   ConfigMap config_map_;
   PlatformSensorProvider* provider_;
   base::WeakPtrFactory<PlatformSensor> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(PlatformSensor);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_