Remove DeviceLightEvent implementation

device/sensors/device_sensors_consts.h

 // Copyright 2015 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.
 
 #ifndef DEVICE_SENSORS_DEVICE_SENSORS_CONSTS_H_
 #define DEVICE_SENSORS_DEVICE_SENSORS_CONSTS_H_
 
 #include "base/time/time.h"
 
 namespace device {
 
-// Constants related to the Device {Motion|Orientation|Light} APIs.
+// Constants related to the Device {Motion|Orientation} APIs.
 
 // A Java counterpart will be generated for this enum.
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.device.sensors
 enum ConsumerType {
   CONSUMER_TYPE_MOTION = 1 << 0,
   CONSUMER_TYPE_ORIENTATION = 1 << 1,
   CONSUMER_TYPE_ORIENTATION_ABSOLUTE = 1 << 2,
-  CONSUMER_TYPE_LIGHT = 1 << 3,
 };
 
 // Specifies the sampling rate for sensor data updates.
 // Note that when changing this value it is desirable to have an adequate
 // matching value |DeviceSensorEventPump::kDefaultPumpFrequencyHz| in
 // content/renderer/device_orientation/device_sensor_event_pump.cc.
 const int kDeviceSensorSamplingRateHz = 60;
 const int kDeviceSensorIntervalMicroseconds =
     base::Time::kMicrosecondsPerSecond / kDeviceSensorSamplingRateHz;
 
-// Corresponding |kDefaultLightPumpFrequencyHz| is in
-// content/renderer/device_sensors/device_light_event_pump.cc.
-const int kLightSensorSamplingRateHz = 5;
-const int kLightSensorIntervalMicroseconds =
-    base::Time::kMicrosecondsPerSecond / kLightSensorSamplingRateHz;
-
 }  // namespace device
 
 #endif  // DEVICE_SENSORS_DEVICE_SENSORS_CONSTS_H_