[sensors] Introduce Generic Sensor API interfaces

device/sensors/platform_sensor_configuration.h

Index: device/sensors/platform_sensor_configuration.h
diff --git a/device/sensors/platform_sensor_configuration.h b/device/sensors/platform_sensor_configuration.h
new file mode 100644
index 0000000000000000000000000000000000000000..51ca8ae92462cf387bc854d9267e4d1be5293f29
--- /dev/null
+++ b/device/sensors/platform_sensor_configuration.h
@@ -0,0 +1,27 @@
+// Copyright 2016 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 DEVICE_SENSORS_PLATFORM_SENSOR_CONFIGURATION_H_
+#define DEVICE_SENSORS_PLATFORM_SENSOR_CONFIGURATION_H_
+
+namespace device {
+
+class PlatformSensorConfiguration {
+ public:
+  PlatformSensorConfiguration();
+  explicit PlatformSensorConfiguration(double frequency);
+  ~PlatformSensorConfiguration();
+
+  bool operator==(const PlatformSensorConfiguration& other) const;
+
+  void SetFrequency(double frequency);
+  double GetFrequency() const;
+
+ private:
+  double frequency_;
+};
+
+}  // namespace device
+
+#endif  // DEVICE_SENSORS_PLATFORM_SENSOR_CONFIGURATION_H_