[Sensors] Clamp given sampling frequency to the minimum supported one

device/generic_sensor/platform_sensor.h

Index: device/generic_sensor/platform_sensor.h
diff --git a/device/generic_sensor/platform_sensor.h b/device/generic_sensor/platform_sensor.h
index 62320a5c48dba20754d5cd9080b64ef3df70706e..2df4ade2b055c2e295971f9f386437be9f9415dd 100644
--- a/device/generic_sensor/platform_sensor.h
+++ b/device/generic_sensor/platform_sensor.h
@@ -48,6 +48,10 @@ class DEVICE_GENERIC_SENSOR_EXPORT PlatformSensor
   // The default implementation returns default frequency.
   virtual double GetMaximumSupportedFrequency();
 
+  // Can be overriden to return the sensor minimum sampling frequency.
+  // The default implementation returns '1.0 / (60 * 60)', i.e. once per hour.
+  virtual double GetMinimumSupportedFrequency();
+
   mojom::SensorType GetType() const;
 
   bool StartListening(Client* client,