[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..f19db503391dc39f446c7e08e7388df6b074b972
--- /dev/null
+++ b/device/sensors/platform_sensor_configuration.h
@@ -0,0 +1,29 @@
+// 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_
+
+#include "device/sensors/sensor_export.h"
+
+namespace device {
+
+class DEVICE_SENSOR_EXPORT PlatformSensorConfiguration {
+ public:
+  PlatformSensorConfiguration();
+  explicit PlatformSensorConfiguration(double frequency);
+  ~PlatformSensorConfiguration();
+
+  bool operator==(const PlatformSensorConfiguration& other) const;
+
+  void set_frequency(double frequency) { frequency_ = frequency; }
+  double frequency() const { return frequency_; }
+
+ private:
+  double frequency_;
+};
+
+}  // namespace device
+
+#endif  // DEVICE_SENSORS_PLATFORM_SENSOR_CONFIGURATION_H_