feat(change detection): add removeShadowDomChild

Author: tbosch

modules/angular2/src/change_detection/abstract_change_detector.js

@@ -33,6 +33,10 @@ export class AbstractChangeDetector extends ChangeDetector {
     cd.parent = this;
   }
 
+  removeShadowDomChild(cd:ChangeDetector) {
+    ListWrapper.remove(this.shadowDomChildren, cd);
+  }
+
   remove() {
     this.parent.removeChild(this);
   }

modules/angular2/test/change_detection/change_detection_spec.js

@@ -484,6 +484,13 @@ export function main() {
 
               expect(parent.lightDomChildren).toEqual([]);
             });
+
+            it("should remove shadow dom children", () => {
+              parent.addShadowDomChild(child);
+              parent.removeShadowDomChild(child);
+
+              expect(parent.shadowDomChildren.length).toEqual(0);
+            });
           });
         });