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_
 
 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.
 // 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::kDefaultPumpDelayMicroseconds| in
+// content/renderer/device_orientation/device_sensor_event_pump.cc.
+const int kInertialSensorIntervalMicroseconds = 1000000 / 60;

[timvolodine, 2014/09/25 21:30:51]

it not very clear what the interval means. could you use
Time::kMicrosecondsPerSecond instead of 1000000? also it may make sense to
introduce
kInertialSensorSamplingFrequencyHz = 60;
kInertialSensorIntervalMicroseconds = Time::kMicrosecondsPerSecond /
kInertialSensorSamplingFrequencyHz;

[jdarpinian, 2014/09/25 22:36:18]

Done.

+// Corresponding |kDefaultLightPumpDelayMicroseconds| is in
 // content/renderer/device_sensors/device_light_event_pump.cc.
-const int kLightSensorIntervalMillis = 200;
+const int kLightSensorIntervalMicroseconds = 1000000 / 5;

[timvolodine, 2014/09/25 21:30:51]

same as above

[jdarpinian, 2014/09/25 22:36:18]

Done.

 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_