Move sub-namespace typedefs to typedefs.js

Here too there is one problem case.

src/ol/raster/operation.js

@@ -10,22 +10,3 @@ ol.raster.OperationType = {
   PIXEL: 'pixel',
   IMAGE: 'image'
 };
-
-
-/**
- * A function that takes an array of input data, performs some operation, and
- * returns an array of ouput data.  For `'pixel'` type operations, functions
- * will be called with an array of {@link ol.raster.Pixel} data and should
- * return an array of the same.  For `'image'` type operations, functions will
- * be called with an array of {@link ImageData
- * https://developer.mozilla.org/en-US/docs/Web/API/ImageData} and should return
- * an array of the same.  The operations are called with a second "data"
- * argument, which can be used for storage.  The data object is accessible
- * from raster events, where it can be initialized in "beforeoperations" and
- * accessed again in "afteroperations".
- *
- * @typedef {function((Array.<ol.raster.Pixel>|Array.<ImageData>), Object):
- *     (Array.<ol.raster.Pixel>|Array.<ImageData>)}
- * @api
- */
-ol.raster.Operation;

src/ol/raster/pixel.js

@@ -1,10 +0,0 @@
-// goog.provide can't be removed from files which only contain a typedef
-goog.provide('ol.raster.Pixel');
-
-
-/**
- * An array of numbers representing pixel values.
- * @typedef {Array.<number>} ol.raster.Pixel
- * @api
- */
-ol.raster.Pixel;