[sensors] Introduce Generic Sensor API interfaces

device/sensors/mojo/sensor_type_converters.cc

Index: device/sensors/mojo/sensor_type_converters.cc
diff --git a/device/sensors/mojo/sensor_type_converters.cc b/device/sensors/mojo/sensor_type_converters.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1ada4e67756331127ff54988151f9ca5667d1619
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+++ b/device/sensors/mojo/sensor_type_converters.cc
@@ -0,0 +1,56 @@
+// 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.
+
+#include "device/sensors/mojo/sensor_type_converters.h"
+
+#include "device/sensors/platform/platform_sensor.h"
+#include "device/sensors/platform/platform_sensor_configuration.h"
+
+#define CHECK_ENUM(VALUE1, VALUE2)                                            \
+  static_assert(static_cast<int32_t>(VALUE1) == static_cast<int32_t>(VALUE2), \
+                "Enum value mismatch.")
+
+namespace mojo {
+
+// static
+device::PlatformSensorConfiguration
+TypeConverter<device::PlatformSensorConfiguration,
+              device::sensors::SensorConfigurationPtr>::
+    Convert(
+        const device::sensors::SensorConfigurationPtr& sensor_configuration) {
+  return device::PlatformSensorConfiguration(sensor_configuration->frequency);
+}
+
+// static
+device::SensorType
+TypeConverter<device::SensorType, device::sensors::SensorType>::Convert(
+    device::sensors::SensorType sensor_type) {
+  CHECK_ENUM(device::SensorType::FIRST, device::sensors::SensorType::FIRST);
+  CHECK_ENUM(device::SensorType::AMBIENT_LIGHT,
+             device::sensors::SensorType::AMBIENT_LIGHT);
+  CHECK_ENUM(device::SensorType::PROXIMITY,
+             device::sensors::SensorType::PROXIMITY);
+  CHECK_ENUM(device::SensorType::LINEAR_ACCELERATION,
+             device::sensors::SensorType::LINEAR_ACCELERATION);
+  CHECK_ENUM(device::SensorType::GYROSCOPE,
+             device::sensors::SensorType::GYROSCOPE);
+  CHECK_ENUM(device::SensorType::PRESSURE,
+             device::sensors::SensorType::PRESSURE);
+  CHECK_ENUM(device::SensorType::LAST, device::sensors::SensorType::LAST);
+
+  return static_cast<device::SensorType>(sensor_type);
+}
+
+// static
+device::sensors::ReportingMode
+TypeConverter<device::sensors::ReportingMode, device::ReportingMode>::Convert(
+    device::ReportingMode reporting_mode) {
+  CHECK_ENUM(device::ReportingMode::ON_CHANGE,
+             device::sensors::ReportingMode::ON_CHANGE);
+  CHECK_ENUM(device::ReportingMode::CONTINUOUS,
+             device::sensors::ReportingMode::CONTINUOUS);
+  return static_cast<device::sensors::ReportingMode>(reporting_mode);
+}
+
+}  // namespace mojo