Increase device orientation event frequency to 60 Hz. Change constants

content/browser/device_sensors/inertial_sensor_consts.h

 // Copyright 2014 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 CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_
 #define CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_
 
+#include "base/time/time.h"
+
 namespace content {
 
 // Constants related to the Device {Motion|Orientation|Light} APIs.
 
 enum ConsumerType {
   CONSUMER_TYPE_MOTION = 1 << 0,
   CONSUMER_TYPE_ORIENTATION = 1 << 1,
   CONSUMER_TYPE_LIGHT = 1 << 2,
 };
 
-// Specifies the minimal interval between subsequent sensor data updates.
+// Specifies the sampling rate for sensor data updates.
 // Note that when changing this value it is desirable to have an adequate
-// matching value |DeviceSensorEventPump::kDefaultPumpDelayMillis| in
-// content/renderer/device_sensors/device_sensor_event_pump.cc.
-const int kInertialSensorIntervalMillis = 50;
-// Corresponding |kDefaultLightPumpDelayMillis| is in
+// matching value |DeviceSensorEventPump::kDefaultPumpFrequencyHz| in
+// content/renderer/device_orientation/device_sensor_event_pump.cc.
+const int kInertialSensorSamplingRateHz = 60;
+const int kInertialSensorIntervalMicroseconds =
+    base::Time::kMicrosecondsPerSecond / kInertialSensorSamplingRateHz;
+
+// Corresponding |kDefaultLightPumpFrequencyHz| is in
 // content/renderer/device_sensors/device_light_event_pump.cc.
-const int kLightSensorIntervalMillis = 200;
+const int kLightSensorSamplingRateHz = 5;
+const int kLightSensorIntervalMicroseconds =
+    base::Time::kMicrosecondsPerSecond / kLightSensorSamplingRateHz;
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_