[Sensors] Improvements in shared buffer managing

third_party/WebKit/Source/modules/sensor/AmbientLightSensorReading.cpp

 // 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.
 
 #include "modules/sensor/AmbientLightSensorReading.h"
 
 #include "modules/sensor/SensorProxy.h"
 
 namespace blink {
 
 AmbientLightSensorReading::AmbientLightSensorReading(
     const AmbientLightSensorReadingInit& init)
     : SensorReading(nullptr), mAmbientLightSensorReadingInit(init) {}
 
 AmbientLightSensorReading::AmbientLightSensorReading(SensorProxy* proxy)
     : SensorReading(proxy),
       mAmbientLightSensorReadingInit(AmbientLightSensorReadingInit()) {}
 
 AmbientLightSensorReading::~AmbientLightSensorReading() = default;
 
 double AmbientLightSensorReading::illuminance() const {
   if (mAmbientLightSensorReadingInit.hasIlluminance())
     return mAmbientLightSensorReadingInit.illuminance();
 
   if (!m_sensorProxy)
     return 0.0;
-  return m_sensorProxy->reading().reading[0];
+  return m_sensorProxy->reading().values[0];
 }
 
 bool AmbientLightSensorReading::isReadingUpdated(
     const SensorProxy::Reading& previous) const {
   if (!m_sensorProxy)
     return false;
-  return previous.reading[0] != illuminance();
+  return previous.values[0] != illuminance();
 }
 
 DEFINE_TRACE(AmbientLightSensorReading) {
   SensorReading::trace(visitor);
 }
 
 }  // namespace blink