[Sensors] Consider maximum supported frequency

device/generic_sensor/sensor_provider_impl.cc

Index: device/generic_sensor/sensor_provider_impl.cc
diff --git a/device/generic_sensor/sensor_provider_impl.cc b/device/generic_sensor/sensor_provider_impl.cc
index 8a7860cb1c971d16493ace11b16fe353f1da3dda..7b0a92464a7bb5b41caeae4e5a5e296ef909388e 100644
--- a/device/generic_sensor/sensor_provider_impl.cc
+++ b/device/generic_sensor/sensor_provider_impl.cc
@@ -89,6 +89,13 @@ void SensorProviderImpl::SensorCreated(
   init_params->mode = sensor->GetReportingMode();
   init_params->default_configuration = sensor->GetDefaultConfiguration();
 
+  double maximum_frequency = sensor->GetMaximumSupportedFrequency();

[shalamov, 2016/11/03 12:54:05]

If platform returns 0, should we cap max to default?

[Mikhail, 2016/11/03 13:28:16]

It should not return 0. Implementation must cap max to default.

+  DCHECK(maximum_frequency);
+  if (maximum_frequency > mojom::SensorConfiguration::kMaxAllowedFrequency)
+    maximum_frequency = mojom::SensorConfiguration::kMaxAllowedFrequency;
+
+  init_params->maximum_frequency = maximum_frequency;
+
   NotifySensorCreated(std::move(init_params), sensor_impl->GetClient(),
                       callback);