Less context

This change removes all changes that were anticipated here for
WMS GetFeatureInfo handling, including the IWMS interface and
the goog.provide for 'ol.tilegrid'. I'll create a separate pull
request for WMS GetFeatureInfo eventually, taking into account
the suggestions from the discussion in #402.

src/ol/imageurlfunction.js

@@ -14,15 +14,16 @@ ol.ImageUrlFunctionType;
 
 /**
  * @param {string} baseUrl Base URL (may have query data).
+ * @param {Object.<string,*>} params to encode in the url.
  * @param {function(string, Object.<string,*>, ol.Extent, ol.Size,
  *     ol.Projection)} paramsFunction params function.
  * @return {ol.ImageUrlFunctionType} Image URL function.
  */
 ol.ImageUrlFunction.createFromParamsFunction =
-    function(baseUrl, paramsFunction) {
+    function(baseUrl, params, paramsFunction) {
   return function(extent, size, projection) {
     return paramsFunction(
-        baseUrl, this.params, extent, size, projection);
+        baseUrl, params, extent, size, projection);
   };
 };