sync

Author: tinayuangao

src/lib/radio/radio.ts

@@ -176,7 +176,9 @@ export class MdRadioGroup extends _MdRadioGroupMixinBase
     this._checkSelectedRadioButton();
   }
 
-  constructor(private _change: ChangeDetectorRef) {}
+  constructor(private _change: ChangeDetectorRef) {
+    super();
+  }
 
   /**
    * Initialize properties once content children are available.
@@ -428,6 +430,7 @@ export class MdRadioButton implements OnInit, AfterViewInit, OnDestroy {
   constructor(@Optional() radioGroup: MdRadioGroup,
               private _elementRef: ElementRef,
               private _renderer: Renderer2,
+              private _changeDetector: ChangeDetectorRef,
               private _focusOriginMonitor: FocusOriginMonitor,
               private _radioDispatcher: UniqueSelectionDispatcher) {
     // Assertions. Ideally these should be stripped out by the compiler.