[Sensors] Decouple sensor readings update from rAF

third_party/WebKit/Source/modules/sensor/BUILD.gn

 # 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.
 
 import("//third_party/WebKit/Source/modules/modules.gni")
 
 blink_modules_sources("sensor") {
   sources = [
     "AbsoluteOrientationSensor.cpp",
     "AbsoluteOrientationSensor.h",
     "Accelerometer.cpp",
     "Accelerometer.h",
     "AmbientLightSensor.cpp",
     "AmbientLightSensor.h",
     "Gyroscope.cpp",
     "Gyroscope.h",
     "Magnetometer.cpp",
     "Magnetometer.h",
     "OrientationSensor.cpp",
     "OrientationSensor.h",
     "Sensor.cpp",
     "Sensor.h",
     "SensorErrorEvent.cpp",
     "SensorErrorEvent.h",
     "SensorProviderProxy.cpp",
     "SensorProviderProxy.h",
     "SensorProxy.cpp",
     "SensorProxy.h",
-    "SensorReadingUpdater.cpp",
-    "SensorReadingUpdater.h",
   ]
 
   deps = [
     "//device/base/synchronization",
     "//device/generic_sensor/public/cpp",
     "//device/generic_sensor/public/interfaces:interfaces_blink",
     "//services/device/public/interfaces:constants_blink",
     "//services/service_manager/public/cpp",
   ]
 }