Make signature for *AtPixel methods more consistent

pixel/coordinate is the first argument.

src/ol/source/imagevectorsource.js

@@ -153,14 +153,14 @@ ol.source.ImageVector.prototype.canvasFunctionInternal_ =
  * @inheritDoc
  */
 ol.source.ImageVector.prototype.forEachFeatureAtPixel = function(
-    resolution, rotation, coordinate, skippedFeatureUids, callback) {
+    coordinate, resolution, rotation, skippedFeatureUids, callback) {
   if (goog.isNull(this.replayGroup_)) {
     return undefined;
   } else {
     /** @type {Object.<string, boolean>} */
     var features = {};
     return this.replayGroup_.forEachFeatureAtPixel(
-        resolution, 0, coordinate, skippedFeatureUids,
+        coordinate, resolution, 0, skippedFeatureUids,
         /**
          * @param {ol.Feature} feature Feature.
          * @return {?} Callback result.

src/ol/source/source.js

@@ -77,9 +77,9 @@ goog.inherits(ol.source.Source, ol.Observable);
 
 
 /**
+ * @param {ol.Coordinate} coordinate Coordinate.
  * @param {number} resolution Resolution.
  * @param {number} rotation Rotation.
- * @param {ol.Coordinate} coordinate Coordinate.
  * @param {Object.<string, boolean>} skippedFeatureUids Skipped feature uids.
  * @param {function(ol.Feature): T} callback Feature callback.
  * @return {T|undefined} Callback result.