Use @api annotation instead of @todo api

src/ol/browserfeature.js

@@ -12,7 +12,7 @@ goog.require('ol.webgl');
  * (dips) on the device (`window.devicePixelRatio`).
  * @const
  * @type {number}
- * @todo api
+ * @api
  */
 ol.BrowserFeature.DEVICE_PIXEL_RATIO = goog.global.devicePixelRatio || 1;
 
@@ -36,7 +36,7 @@ ol.BrowserFeature.HAS_CANVAS_LINE_DASH = false;
  * True if browser supports Canvas.
  * @const
  * @type {boolean}
- * @todo api
+ * @api
  */
 ol.BrowserFeature.HAS_CANVAS = ol.ENABLE_CANVAS && (
     /**
@@ -66,7 +66,7 @@ ol.BrowserFeature.HAS_CANVAS = ol.ENABLE_CANVAS && (
  * Indicates if DeviceOrientation is supported in the user's browser.
  * @const
  * @type {boolean}
- * @todo api
+ * @api
  */
 ol.BrowserFeature.HAS_DEVICE_ORIENTATION =
     'DeviceOrientationEvent' in goog.global;
@@ -84,7 +84,7 @@ ol.BrowserFeature.HAS_DOM = ol.ENABLE_DOM;
  * Is HTML5 geolocation supported in the current browser?
  * @const
  * @type {boolean}
- * @todo api
+ * @api
  */
 ol.BrowserFeature.HAS_GEOLOCATION = 'geolocation' in goog.global.navigator;
 
@@ -101,7 +101,7 @@ ol.BrowserFeature.HAS_JSON_PARSE =
  * True if browser supports touch events.
  * @const
  * @type {boolean}
- * @todo api
+ * @api
  */
 ol.BrowserFeature.HAS_TOUCH = ol.ASSUME_TOUCH || 'ontouchstart' in goog.global;
 
@@ -127,7 +127,7 @@ ol.BrowserFeature.HAS_MSPOINTER =
  * True if browser supports WebGL.
  * @const
  * @type {boolean}
- * @todo api
+ * @api
  */
 ol.BrowserFeature.HAS_WEBGL = ol.ENABLE_WEBGL && (
     /**