[Sensors] Improvements in shared buffer managing

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

Index: third_party/WebKit/Source/modules/sensor/AmbientLightSensorReading.cpp
diff --git a/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReading.cpp b/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReading.cpp
index 74efa7b19b239be99da4cb6b26fc9e4a58ef8a71..2d06cd920f37f3bb6b46ead48b7947ebf3666ab3 100644
--- a/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReading.cpp
+++ b/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReading.cpp
@@ -24,14 +24,14 @@ double AmbientLightSensorReading::illuminance() const {
 
   if (!m_sensorProxy)
     return 0.0;
-  return m_sensorProxy->reading().reading[0];
+  return m_sensorProxy->reading().value1;
 }
 
 bool AmbientLightSensorReading::isReadingUpdated(
     const SensorProxy::Reading& previous) const {
   if (!m_sensorProxy)
     return false;
-  return previous.reading[0] != illuminance();
+  return previous.value1 != illuminance();
 }
 
 DEFINE_TRACE(AmbientLightSensorReading) {