Add |notify_client_on_reading_change| flag to sensor configuration

device/generic_sensor/public/interfaces/sensor.mojom

Index: device/generic_sensor/public/interfaces/sensor.mojom
diff --git a/device/generic_sensor/public/interfaces/sensor.mojom b/device/generic_sensor/public/interfaces/sensor.mojom
index 533272a84bab4fa33d767f0b2e897cd8fe7ffc35..ce38207b80d47b63ba899583f0528c97377613b5 100644
--- a/device/generic_sensor/public/interfaces/sensor.mojom
+++ b/device/generic_sensor/public/interfaces/sensor.mojom
@@ -40,6 +40,15 @@ struct SensorConfiguration {
   // Requested frequency in Hz.
   double frequency;
   // TODO(shalamov): Add map<string, union> for sensor specific configuration.
+
+  // For sensors with ON_CHANGE reporting mode:
+  // If at least one configuration sets this flag to false,
+  // SensorClient::SensorReadingChanged() signal is sent to the client;
+  // otherwise it is not.

[Reilly Grant (use Gerrit), 2017/06/09 22:10:02]

This comment doesn't seem accurate.

[juncai, 2017/06/09 22:52:32]

Done.

+  // For sensors with CONTINUOUS reporting mode:
+  // This flag has no effect since SensorClient::SensorReadingChanged() is not
+  // sent to the client.
+  bool suppress_on_change_events = false;
 };
 
 // Interface for controlling the Sensor.