[Sensors] Align sensor reading attribute implementation with the specification

third_party/WebKit/Source/modules/modules_idl_files.gni

Index: third_party/WebKit/Source/modules/modules_idl_files.gni
diff --git a/third_party/WebKit/Source/modules/modules_idl_files.gni b/third_party/WebKit/Source/modules/modules_idl_files.gni
index bc1b79faf1d0933f91bd8dca467b3b12c6550fe9..f685da84d084db12b72572ca1be96c52cfe4c7d1 100644
--- a/third_party/WebKit/Source/modules/modules_idl_files.gni
+++ b/third_party/WebKit/Source/modules/modules_idl_files.gni
@@ -225,7 +225,6 @@ modules_idl_files =
                     "sensor/Sensor.idl",
                     "sensor/SensorErrorEvent.idl",
                     "sensor/SensorReading.idl",
-                    "sensor/SensorReadingEvent.idl",
                     "serviceworkers/Client.idl",
                     "serviceworkers/Clients.idl",
                     "serviceworkers/ExtendableEvent.idl",
@@ -464,7 +463,6 @@ modules_dictionary_idl_files =
                     "quota/StorageEstimate.idl",
                     "sensor/AmbientLightSensorReadingInit.idl",
                     "sensor/SensorErrorEventInit.idl",
-                    "sensor/SensorReadingEventInit.idl",
                     "sensor/SensorOptions.idl",
                     "serviceworkers/ClientQueryOptions.idl",
                     "serviceworkers/ExtendableEventInit.idl",
@@ -803,8 +801,6 @@ generated_modules_dictionary_files = [
   "$blink_modules_output_dir/sensor/AmbientLightSensorReadingInit.h",
   "$blink_modules_output_dir/sensor/SensorErrorEventInit.cpp",
   "$blink_modules_output_dir/sensor/SensorErrorEventInit.h",
-  "$blink_modules_output_dir/sensor/SensorReadingEventInit.cpp",
-  "$blink_modules_output_dir/sensor/SensorReadingEventInit.h",
   "$blink_modules_output_dir/sensor/SensorOptions.cpp",
   "$blink_modules_output_dir/sensor/SensorOptions.h",
   "$blink_modules_output_dir/serviceworkers/ClientQueryOptions.cpp",