Convert device_sensors to use mojo.

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/interfaces/motion.mojom.h"
 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceMotionData.h"
 
 namespace blink {
 class WebDeviceMotionListener;
 }
 
 namespace content {
 
 typedef SharedMemorySeqLockReader<blink::WebDeviceMotionData>
     DeviceMotionSharedMemoryReader;
 
 class CONTENT_EXPORT DeviceMotionEventPump
-    : public DeviceSensorEventPump<blink::WebDeviceMotionListener> {
+    : public DeviceSensorMojoClientMixin<
+          DeviceSensorEventPump<blink::WebDeviceMotionListener>,
+          device::mojom::MotionSensor> {
  public:
   explicit DeviceMotionEventPump(RenderThread* thread);
   ~DeviceMotionEventPump() override;
 
-  // // PlatformEventObserver.
-  bool OnControlMessageReceived(const IPC::Message& message) override;
+  // PlatformEventObserver.
   void SendFakeDataForTesting(void* fake_data) override;
 
  protected:
   void FireEvent() override;
   bool InitializeReader(base::SharedMemoryHandle handle) override;
 
-  // PlatformEventObserver.
-  void SendStartMessage() override;
-  void SendStopMessage() override;
-
   std::unique_ptr<DeviceMotionSharedMemoryReader> reader_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPump);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_