Promote dispatchChangeEvent from ol.renderer.webgl.Layer to ol.renderer.Layer

src/ol/renderer/layerrenderer.js

@@ -64,6 +64,14 @@ ol.renderer.Layer = function(mapRenderer, layer) {
 goog.inherits(ol.renderer.Layer, ol.Object);
 
 
+/**
+ * @protected
+ */
+ol.renderer.Layer.prototype.dispatchChangeEvent = function() {
+  this.dispatchEvent(goog.events.EventType.CHANGE);
+};
+
+
 /**
  * @return {ol.layer.Layer} Layer.
  */