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diff --git a/chre_api/legacy/v1_4/chre/sensor_types.h b/chre_api/legacy/v1_4/chre/sensor_types.h
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--- a/chre_api/legacy/v1_4/chre/sensor_types.h
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@@ -1,423 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _CHRE_SENSOR_TYPES_H_
-#define _CHRE_SENSOR_TYPES_H_
-
-/**
- * @file
- * Standalone definition of sensor types, and the data structures of the sample
- * events they emit.
- */
-
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @file
- * The CHRE_SENSOR_TYPE_* defines are the sensor types supported.
- *
- * Unless otherwise noted, each of these sensor types is based off of a
- * corresponding sensor type in the Android API's sensors.h interface.
- * For a given CHRE_SENSOR_TYPE_FOO, it corresponds to the SENSOR_TYPE_FOO in
- * hardware/libhardware/include/hardware/sensors.h of the Android code base.
- *
- * Unless otherwise noted below, a CHRE_SENSOR_TYPE_FOO should be assumed
- * to work the same as the Android SENSOR_TYPE_FOO, as documented in the
- * sensors.h documentation and as detailed within the Android Compatibility
- * Definition Document.
- *
- * Note that every sensor will generate CHRE_EVENT_SENSOR_SAMPLING_CHANGE
- * events, so it is not listed with each individual sensor.
- */
-
-/**
- * Start value for all of the vendor-defined private sensors.
- *
- * @since v1.2
- */
-#define CHRE_SENSOR_TYPE_VENDOR_START  UINT8_C(192)
-
-/**
- * Accelerometer.
- *
- * Generates: CHRE_EVENT_SENSOR_ACCELEROMETER_DATA and
- *     optionally CHRE_EVENT_SENSOR_ACCELEROMETER_BIAS_INFO
- *
- * Note that the ACCELEROMETER_DATA is always the fully calibrated data,
- * including factory calibration and runtime calibration if available.
- *
- * @see chreConfigureSensorBiasEvents
- */
-#define CHRE_SENSOR_TYPE_ACCELEROMETER  UINT8_C(1)
-
-/**
- * Instantaneous motion detection.
- *
- * Generates: CHRE_EVENT_SENSOR_INSTANT_MOTION_DETECT_DATA
- *
- * This is a one-shot sensor.
- *
- * This does not have a direct analogy within sensors.h.  This is similar
- * to SENSOR_TYPE_MOTION_DETECT, but this triggers instantly upon any
- * motion, instead of waiting for a period of continuous motion.
- */
-#define CHRE_SENSOR_TYPE_INSTANT_MOTION_DETECT  UINT8_C(2)
-
-/**
- * Stationary detection.
- *
- * Generates: CHRE_EVENT_SENSOR_STATIONARY_DETECT_DATA
- *
- * This is a one-shot sensor.
- */
-#define CHRE_SENSOR_TYPE_STATIONARY_DETECT  UINT8_C(3)
-
-/**
- * Gyroscope.
- *
- * Generates: CHRE_EVENT_SENSOR_GYROSCOPE_DATA and
- *     optionally CHRE_EVENT_SENSOR_GYROSCOPE_BIAS_INFO
- *
- * Note that the GYROSCOPE_DATA is always the fully calibrated data, including
- * factory calibration and runtime calibration if available.
- *
- * @see chreConfigureSensorBiasEvents
- */
-#define CHRE_SENSOR_TYPE_GYROSCOPE  UINT8_C(6)
-
-/**
- * Uncalibrated gyroscope.
- *
- * Generates: CHRE_EVENT_SENSOR_UNCALIBRATED_GYROSCOPE_DATA
- *
- * Note that the UNCALIBRATED_GYROSCOPE_DATA must be factory calibrated data,
- * but not runtime calibrated.
- */
-#define CHRE_SENSOR_TYPE_UNCALIBRATED_GYROSCOPE  UINT8_C(7)
-
-/**
- * Magnetometer.
- *
- * Generates: CHRE_EVENT_SENSOR_GEOMAGNETIC_FIELD_DATA and
- *     optionally CHRE_EVENT_SENSOR_GEOMAGNETIC_FIELD_BIAS_INFO
- *
- * Note that the GEOMAGNETIC_FIELD_DATA is always the fully calibrated data,
- * including factory calibration and runtime calibration if available.
- *
- * @see chreConfigureSensorBiasEvents
- */
-#define CHRE_SENSOR_TYPE_GEOMAGNETIC_FIELD  UINT8_C(8)
-
-/**
- * Uncalibrated magnetometer.
- *
- * Generates: CHRE_EVENT_SENSOR_UNCALIBRATED_GEOMAGNETIC_FIELD_DATA
- *
- * Note that the UNCALIBRATED_GEOMAGNETIC_FIELD_DATA must be factory calibrated
- * data, but not runtime calibrated.
- */
-#define CHRE_SENSOR_TYPE_UNCALIBRATED_GEOMAGNETIC_FIELD  UINT8_C(9)
-
-/**
- * Barometric pressure sensor.
- *
- * Generates: CHRE_EVENT_SENSOR_PRESSURE_DATA
- */
-#define CHRE_SENSOR_TYPE_PRESSURE  UINT8_C(10)
-
-/**
- * Ambient light sensor.
- *
- * Generates: CHRE_EVENT_SENSOR_LIGHT_DATA
- *
- * This is an on-change sensor.
- */
-#define CHRE_SENSOR_TYPE_LIGHT  UINT8_C(12)
-
-/**
- * Proximity detection.
- *
- * Generates: CHRE_EVENT_SENSOR_PROXIMITY_DATA
- *
- * This is an on-change sensor.
- */
-#define CHRE_SENSOR_TYPE_PROXIMITY  UINT8_C(13)
-
-/**
- * Step detection.
- *
- * Generates: CHRE_EVENT_SENSOR_STEP_DETECT_DATA
- *
- * @since v1.3
- */
-#define CHRE_SENSOR_TYPE_STEP_DETECT  UINT8_C(23)
-
-/**
- * Uncalibrated accelerometer.
- *
- * Generates: CHRE_EVENT_SENSOR_UNCALIBRATED_ACCELEROMETER_DATA
- *
- * Note that the UNCALIBRATED_ACCELEROMETER_DATA must be factory calibrated
- * data, but not runtime calibrated.
- */
-#define CHRE_SENSOR_TYPE_UNCALIBRATED_ACCELEROMETER  UINT8_C(55)
-
-/**
- * Accelerometer temperature.
- *
- * Generates: CHRE_EVENT_SENSOR_ACCELEROMETER_TEMPERATURE_DATA
- */
-#define CHRE_SENSOR_TYPE_ACCELEROMETER_TEMPERATURE  UINT8_C(56)
-
-/**
- * Gyroscope temperature.
- *
- * Generates: CHRE_EVENT_SENSOR_GYROSCOPE_TEMPERATURE_DATA
- */
-#define CHRE_SENSOR_TYPE_GYROSCOPE_TEMPERATURE  UINT8_C(57)
-
-/**
- * Magnetometer temperature.
- *
- * Generates: CHRE_EVENT_SENSOR_GEOMAGNETIC_FIELD_TEMPERATURE_DATA
- */
-#define CHRE_SENSOR_TYPE_GEOMAGNETIC_FIELD_TEMPERATURE  UINT8_C(58)
-
-#if CHRE_SENSOR_TYPE_GEOMAGNETIC_FIELD_TEMPERATURE >= CHRE_SENSOR_TYPE_VENDOR_START
-#error Too many sensor types
-#endif
-
-/**
- * Values that can be stored in the accuracy field of chreSensorDataHeader.
- * If CHRE_SENSOR_ACCURACY_UNKNOWN is returned, then the driver did not provide
- * accuracy information with the data. Values in the range
- * [CHRE_SENSOR_ACCURACY_VENDOR_START, CHRE_SENSOR_ACCURACY_VENDOR_END] are
- * reserved for vendor-specific values for vendor sensor types, and are not used
- * by CHRE for standard sensor types.
- *
- * Otherwise, the values have the same meaning as defined in the Android
- * Sensors definition:
- * https://developer.android.com/reference/android/hardware/SensorManager
- *
- * @since v1.3
- *
- * @defgroup CHRE_SENSOR_ACCURACY
- * @{
- */
-
-#define CHRE_SENSOR_ACCURACY_UNKNOWN       UINT8_C(0)
-#define CHRE_SENSOR_ACCURACY_UNRELIABLE    UINT8_C(1)
-#define CHRE_SENSOR_ACCURACY_LOW           UINT8_C(2)
-#define CHRE_SENSOR_ACCURACY_MEDIUM        UINT8_C(3)
-#define CHRE_SENSOR_ACCURACY_HIGH          UINT8_C(4)
-#define CHRE_SENSOR_ACCURACY_VENDOR_START  UINT8_C(192)
-#define CHRE_SENSOR_ACCURACY_VENDOR_END    UINT8_MAX
-
-/** @} */
-
-/**
- * Header used in every structure containing batchable data from a sensor.
- *
- * The typical structure for sensor data looks like:
- *
- *   struct chreSensorTypeData {
- *       struct chreSensorDataHeader header;
- *       struct chreSensorTypeSampleData {
- *           uint32_t timestampDelta;
- *           union {
- *               <type> value;
- *               <type> interpretation0;
- *               <type> interpretation1;
- *           };
- *       } readings[1];
- *   };
- *
- * Despite 'readings' being declared as an array of 1 element,
- * an instance of the struct will actually have 'readings' as
- * an array of header.readingCount elements (which may be 1).
- * The 'timestampDelta' is in relation to the previous 'readings' (or
- * the baseTimestamp for readings[0].  So,
- * Timestamp for readings[0] == header.baseTimestamp +
- *     readings[0].timestampDelta.
- * Timestamp for readings[1] == timestamp for readings[0] +
- *     readings[1].timestampDelta.
- * And thus, in order to determine the timestamp for readings[N], it's
- * necessary to process through all of the N-1 readings.  The advantage,
- * though, is that our entire readings can span an arbitrary length of time,
- * just as long as any two consecutive readings differ by no more than
- * 4.295 seconds (timestampDelta, like all time in the CHRE, is in
- * nanoseconds).
- *
- * If a sensor has batched readings where two consecutive readings differ by
- * more than 4.295 seconds, the CHRE will split them across multiple
- * instances of the struct, and send multiple events.
- *
- * The value from the sensor is typically expressed in a union,
- * allowing a generic access to the data ('value'), along with
- * differently named access giving a more natural interpretation
- * of the data for the specific sensor types which use this
- * structure.  This allows, for example, barometer code to
- * reference readings[N].pressure, and an ambient light sensor
- * to reference readings[N].light, while both use the same
- * structure.
- */
-struct chreSensorDataHeader {
-    /**
-     * The base timestamp, in nanoseconds.
-     */
-    uint64_t baseTimestamp;
-
-    /**
-     * The handle of the sensor producing this event.
-     */
-    uint32_t sensorHandle;
-
-    /**
-     * The number elements in the 'readings' array.
-     *
-     * This must be at least 1.
-     */
-    uint16_t readingCount;
-
-    /**
-     * The accuracy of the sensor data.
-     *
-     * @ref CHRE_SENSOR_ACCURACY
-     *
-     * @since v1.3
-     */
-    uint8_t accuracy;
-
-    /**
-     * Reserved bytes.
-     *
-     * This must be 0.
-     */
-    uint8_t reserved;
-};
-
-/**
- * Data for a sensor which reports on three axes.
- *
- * This is used by CHRE_EVENT_SENSOR_ACCELEROMETER_DATA,
- * CHRE_EVENT_SENSOR_ACCELEROMETER_BIAS_INFO,
- * CHRE_EVENT_SENSOR_UNCALIBRATED_ACCELEROMETER_DATA,
- * CHRE_EVENT_SENSOR_GYROSCOPE_DATA,
- * CHRE_EVENT_SENSOR_GYROSCOPE_BIAS_INFO,
- * CHRE_EVENT_SENSOR_UNCALIBRATED_GYROSCOPE_DATA,
- * CHRE_EVENT_SENSOR_GEOMAGNETIC_FIELD_DATA,
- * CHRE_EVENT_SENSOR_GEOMAGNETIC_FIELD_BIAS_INFO, and
- * CHRE_EVENT_SENSOR_UNCALIBRATED_GEOMAGNETIC_FIELD_DATA.
- */
-struct chreSensorThreeAxisData {
-    /**
-     * @see chreSensorDataHeader
-     */
-    struct chreSensorDataHeader header;
-    struct chreSensorThreeAxisSampleData {
-        /**
-         * @see chreSensorDataHeader
-         */
-        uint32_t timestampDelta;
-        union {
-            float values[3];
-            float v[3];
-            struct {
-                float x;
-                float y;
-                float z;
-            };
-            float bias[3];
-            struct {
-                float x_bias;
-                float y_bias;
-                float z_bias;
-            };
-        };
-    } readings[1];
-};
-
-/**
- * Data from a sensor where we only care about a event occurring.
- *
- * This is a bit unusual in that our readings have no data in addition
- * to the timestamp.  But since we only care about the occurrence, we
- * don't need to know anything else.
- *
- * Used by: CHRE_EVENT_SENSOR_INSTANT_MOTION_DETECT_DATA,
- *     CHRE_EVENT_SENSOR_STATIONARY_DETECT_DATA, and
- *     CHRE_EVENT_SENSOR_STEP_DETECT_DATA.
- */
-struct chreSensorOccurrenceData {
-    struct chreSensorDataHeader header;
-    struct chreSensorOccurrenceSampleData {
-        uint32_t timestampDelta;
-        // This space intentionally left blank.
-        // Only the timestamp is meaningful here, there
-        // is no additional data.
-    } readings[1];
-};
-
-/**
- * This is used by CHRE_EVENT_SENSOR_LIGHT_DATA,
- * CHRE_EVENT_SENSOR_PRESSURE_DATA,
- * CHRE_EVENT_SENSOR_ACCELEROMETER_TEMPERATURE_DATA,
- * CHRE_EVENT_SENSOR_GYROSCOPE_TEMPERATURE_DATA, and
- * CHRE_EVENT_SENSOR_GEOMAGNETIC_FIELD_TEMPERATURE_DATA.
- */
-struct chreSensorFloatData {
-    struct chreSensorDataHeader header;
-    struct chreSensorFloatSampleData {
-        uint32_t timestampDelta;
-        union {
-            float value;
-            float light;        //!< Unit: lux
-            float pressure;     //!< Unit: hectopascals (hPa)
-            float temperature;  //!< Unit: degrees Celsius
-        };
-    } readings[1];
-};
-
-/**
- * CHRE_EVENT_SENSOR_PROXIMITY_DATA.
- */
-struct chreSensorByteData {
-    struct chreSensorDataHeader header;
-    struct chreSensorByteSampleData {
-        uint32_t timestampDelta;
-        union {
-            uint8_t value;
-            struct {
-                uint8_t isNear : 1;
-                //! @deprecated As of v1.2, this field is deprecated and must
-                //! always be set to 0
-                uint8_t invalid : 1;
-                uint8_t padding0 : 6;
-            };
-        };
-    } readings[1];
-};
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  /* _CHRE_SENSOR_TYPES_H_ */