$route.onChange should return the registered fn

src/services.js

@@ -709,11 +709,15 @@ angularServiceInject('$route', function(location) {
          * @methodOf angular.service.$route
          *
          * @param {function()} fn Function that will be called when `$route.current` changes.
+         * @returns {function()} The registered function.
          *
          * @description
          * Register a handler function that will be called when route changes
          */
-        onChange: bind(onChange, onChange.push),
+        onChange: function(fn) {
+          onChange.push(fn);
+          return fn;
+        },
 
         /**
          * @workInProgress

test/servicesSpec.js

@@ -410,6 +410,14 @@ describe("service", function(){
       expect($route.current.template).toEqual('instant update');
     });
 
+    it('should return fn registered with onChange()', function() {
+      var scope = angular.scope(),
+          $route = scope.$service('$route'),
+          fn = function() {};
+
+      expect($route.onChange(fn)).toBe(fn);
+    });
+
     it('should allow routes to be defined with just templates without controllers', function() {
       var scope = angular.scope(),
           $location = scope.$service('$location'),