[Sensors] Remove SensorReading interfaces

content/test/data/generic_sensor/ambient_light_sensor_test.html

Index: content/test/data/generic_sensor/ambient_light_sensor_test.html
diff --git a/content/test/data/generic_sensor/ambient_light_sensor_test.html b/content/test/data/generic_sensor/ambient_light_sensor_test.html
index 939d29a3181950a9f5b9015347e9310c812acd9c..25d46a6a2d3120d991bca1d082105282d524095f 100644
--- a/content/test/data/generic_sensor/ambient_light_sensor_test.html
+++ b/content/test/data/generic_sensor/ambient_light_sensor_test.html
@@ -5,9 +5,9 @@
       var timeOrigin;
       var sensor;
       function onAmbientLightReadingChange() {
-        if (sensor.reading.illuminance == 50 &&
-            sensor.reading.timeStamp > timeOrigin &&
-            sensor.reading.timeStamp < window.performance.now()) {
+        if (sensor.illuminance == 50 &&
+            sensor.timestamp > timeOrigin &&
+            sensor.timestamp < window.performance.now()) {
           pass();
         } else {
           fail();