[sensors][permission] Add new permission types in permission module.

components/content_settings/core/common/content_settings_types.h

 // Copyright 2017 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 COMPONENTS_CONTENT_SETTINGS_CORE_COMMON_CONTENT_SETTINGS_TYPES_H_
 #define COMPONENTS_CONTENT_SETTINGS_CORE_COMMON_CONTENT_SETTINGS_TYPES_H_
 
 #include <cstddef>
 
 #include "build/build_config.h"
@@ skipping 67 matching lines @@
   // Website setting which stores the list of client hints (and the preference
   // expiration time for each of the client hints) that the origin requested
   // the browser to remember. Spec:
   // http://httpwg.org/http-extensions/client-hints.html#accept-ch-lifetime.
   // The setting is stored as a dictionary that includes the mapping from
   // different client hints to their respective expiration times (seconds since
   // epoch). The browser is expected to send all the unexpired client hints in
   // the HTTP request headers for every resource requested from that origin.
   CONTENT_SETTINGS_TYPE_CLIENT_HINTS,
 
+  // Generic Sensor API covering ambient-light-sensor, accelerometer, gyroscope
+  // and magnetometer are all mapped to a single content_settings_type.
+  // Setting for the Generic Sensor API covering ambient-light-sensor,
+  // accelerometer, gyroscope and magnetometer. These are all mapped to a single
+  // ContentSettingsType.
+  CONTENT_SETTINGS_TYPE_SENSORS,
+
   CONTENT_SETTINGS_NUM_TYPES,
 };
 
 struct ContentSettingsTypeHash {
   std::size_t operator()(ContentSettingsType type) const {
     return static_cast<std::size_t>(type);
   }
 };
 
 #endif  // COMPONENTS_CONTENT_SETTINGS_CORE_COMMON_CONTENT_SETTINGS_TYPES_H_