Refactor content/renderer/device_sensors to use device/generic_sensor instead of device/sensors

content/renderer/device_sensors/device_motion_event_pump.h

 // Copyright 2014 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 CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_
 #define CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_
 
-#include <memory>
-
 #include "base/macros.h"
 #include "content/renderer/device_sensors/device_sensor_event_pump.h"
-#include "content/renderer/shared_memory_seqlock_reader.h"
-#include "device/sensors/public/cpp/motion_data.h"
-#include "device/sensors/public/interfaces/motion.mojom.h"
 
 namespace blink {
+class WebDeviceMotionData;
 class WebDeviceMotionListener;
 }
 
 namespace content {
 
-typedef SharedMemorySeqLockReader<device::MotionData>
-    DeviceMotionSharedMemoryReader;
-
 class CONTENT_EXPORT DeviceMotionEventPump
-    : public DeviceSensorMojoClientMixin<
-          DeviceSensorEventPump<blink::WebDeviceMotionListener>,
-          device::mojom::MotionSensor> {
+    : public DeviceSensorEventPump<blink::WebDeviceMotionListener> {
  public:
   explicit DeviceMotionEventPump(RenderThread* thread);
   ~DeviceMotionEventPump() override;
 
-  // PlatformEventObserver.
+  // PlatformEventObserver:
+  void SendStartMessage() override;
   void SendFakeDataForTesting(void* fake_data) override;
 
  protected:
+  // DeviceSensorEventPump:
   void FireEvent() override;
-  bool InitializeReader(base::SharedMemoryHandle handle) override;
 
-  std::unique_ptr<DeviceMotionSharedMemoryReader> reader_;
+ private:
+  // DeviceSensorEventPump:
+  bool CanStart() const override;
+
+  bool AllAvailableSensorsAreActive() const;
+  bool GetDataFromSharedMemory(blink::WebDeviceMotionData* data);
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPump);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_