[Sensors] Remove SensorReading interfaces

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

Index: third_party/WebKit/Source/modules/sensor/Magnetometer.cpp
diff --git a/third_party/WebKit/Source/modules/sensor/Magnetometer.cpp b/third_party/WebKit/Source/modules/sensor/Magnetometer.cpp
index 10b228c7eb1c556271c7d3f025054b41f8c67200..78a64c0ec320401a18eac1838c977c225e6ccf8a 100644
--- a/third_party/WebKit/Source/modules/sensor/Magnetometer.cpp
+++ b/third_party/WebKit/Source/modules/sensor/Magnetometer.cpp
@@ -4,8 +4,6 @@
 
 #include "modules/sensor/Magnetometer.h"
 
-#include "modules/sensor/MagnetometerReading.h"
-
 using device::mojom::blink::SensorType;
 
 namespace blink {
@@ -31,13 +29,16 @@ Magnetometer::Magnetometer(ExecutionContext* executionContext,
              exceptionState,
              SensorType::MAGNETOMETER) {}
 
-MagnetometerReading* Magnetometer::reading() const {
-  return static_cast<MagnetometerReading*>(Sensor::reading());
+double Magnetometer::x(bool& isNull) const {
+  return readingValue(0, isNull);
+}
+
+double Magnetometer::y(bool& isNull) const {
+  return readingValue(1, isNull);
 }
 
-std::unique_ptr<SensorReadingFactory>
-Magnetometer::createSensorReadingFactory() {
-  return WTF::makeUnique<SensorReadingFactoryImpl<MagnetometerReading>>();
+double Magnetometer::z(bool& isNull) const {
+  return readingValue(2, isNull);
 }
 
 DEFINE_TRACE(Magnetometer) {