[sensors] Android platform adaptation for Generic Sensor API

device/generic_sensor/platform_sensor_configuration.h

Index: device/generic_sensor/platform_sensor_configuration.h
diff --git a/device/generic_sensor/platform_sensor_configuration.h b/device/generic_sensor/platform_sensor_configuration.h
index 83a2d9bd8f4684924fb64baca09293b7b03a4ed3..6a70e4dda4d11121018eb88082576a40a343b6ce 100644
--- a/device/generic_sensor/platform_sensor_configuration.h
+++ b/device/generic_sensor/platform_sensor_configuration.h
@@ -18,6 +18,11 @@ class DEVICE_SENSOR_EXPORT PlatformSensorConfiguration {
 
   bool operator==(const PlatformSensorConfiguration& other) const;
 
+  // Platform dependent implementations can override this operator if different
+  // optimal configuration comparison is required. By default, only frequency is
+  // used to compare two configurations.
+  virtual bool operator>(const PlatformSensorConfiguration& other) const;
+
   void set_frequency(double frequency) {
     DCHECK(frequency_ <= kMaxAllowedFrequency && frequency_ > 0.0);
     frequency_ = frequency;