Implement DeviceMotionEvent API

content/browser/device_sensors/data_fetcher_shared_memory_chromeos.cc

 // Copyright 2015 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.
 
 #include "content/browser/device_sensors/data_fetcher_shared_memory.h"
 
 #include "content/browser/device_sensors/sensor_manager_chromeos.h"
 
 namespace content {
 
 DataFetcherSharedMemory::DataFetcherSharedMemory() {
 }
 
 DataFetcherSharedMemory::~DataFetcherSharedMemory() {
 }
 
 bool DataFetcherSharedMemory::Start(ConsumerType consumer_type, void* buffer) {
   DCHECK(buffer);
   if (!sensor_manager_)
     sensor_manager_.reset(new SensorManagerChromeOS);
 
   switch (consumer_type) {
     case CONSUMER_TYPE_MOTION:
-      // TODO(jonross): Implement Device Motion API. (crbug.com/427662)
-      NOTIMPLEMENTED();
-      return false;
+      sensor_manager_->StartFetchingDeviceMotionData(
+          static_cast<DeviceMotionHardwareBuffer*>(buffer));
+      return true;
     case CONSUMER_TYPE_ORIENTATION:
       return sensor_manager_->StartFetchingDeviceOrientationData(
           static_cast<DeviceOrientationHardwareBuffer*>(buffer));

[flackr, 2015/02/25 23:15:17]

nit: same applies here right? StartFetchingDeviceOrientationData also only
returns true.

[jonross, 2015/03/02 15:18:10]

Done.

     case CONSUMER_TYPE_LIGHT:
       NOTIMPLEMENTED();
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) {
   switch (consumer_type) {
     case CONSUMER_TYPE_MOTION:
-      NOTIMPLEMENTED();
-      return false;
+      return sensor_manager_->StopFetchingDeviceMotionData();
     case CONSUMER_TYPE_ORIENTATION:
       return sensor_manager_->StopFetchingDeviceOrientationData();
     case CONSUMER_TYPE_LIGHT:
       NOTIMPLEMENTED();
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace content