fix(timepicker): re-expose TimepickerController

- Re-expose `TimepickerController` with deprecation notice

Closes #4531

Author: wesleycho

src/timepicker/test/timepicker.spec.js

@@ -1752,7 +1752,8 @@ describe('timepicker deprecation', function() {
     element = $compile(element)($rootScope);
     $rootScope.$digest();
 
-    expect($log.warn.calls.count()).toBe(1);
-    expect($log.warn.calls.argsFor(0)).toEqual(['timepicker is now deprecated. Use uib-timepicker instead.']);
+    expect($log.warn.calls.count()).toBe(2);
+    expect($log.warn.calls.argsFor(0)).toEqual(['TimepickerController is now deprecated. Use UibTimepickerController instead.']);
+    expect($log.warn.calls.argsFor(1)).toEqual(['timepicker is now deprecated. Use uib-timepicker instead.']);
   }));
 });

src/timepicker/timepicker.js

@@ -386,11 +386,22 @@ angular.module('ui.bootstrap.timepicker')
 
 .value('$timepickerSuppressWarning', false)
 
+.controller('TimepickerController', ['$scope', '$attrs', '$controller', '$log', '$timepickerSuppressWarning', function($scope, $attrs, $controller, $log, $timepickerSuppressWarning) {
+  if (!$timepickerSuppressWarning) {
+    $log.warn('TimepickerController is now deprecated. Use UibTimepickerController instead.');
+  }
+
+  angular.extend(this, $controller('UibTimepickerController', {
+    $scope: $scope,
+    $attrs: $attrs
+  }));
+}])
+
 .directive('timepicker', ['$log', '$timepickerSuppressWarning', function($log, $timepickerSuppressWarning) {
   return {
     restrict: 'EA',
     require: ['timepicker', '?^ngModel'],
-    controller: 'UibTimepickerController',
+    controller: 'TimepickerController',
     controllerAs: 'timepicker',
     replace: true,
     scope: {},