feat(LifeCycle): change LifeCycle to be able register it with a zone

Author: vsavkin

modules/core/src/life_cycle/life_cycle.js

@@ -1,13 +1,22 @@
 import {FIELD} from 'facade/lang';
 import {ChangeDetector} from 'change_detection/change_detector';
+import {VmTurnZone} from 'core/zone/vm_turn_zone';
 
 export class LifeCycle {
  _changeDetector:ChangeDetector;
- constructor() {
- this._changeDetector = null;
+
+ constructor(changeDetector:ChangeDetector) {
+ this._changeDetector = changeDetector;
+ }
+
+ registerWith(zone:VmTurnZone) {
+ zone.initCallbacks({
+ onTurnDone: () => this.tick()
+ });
+ this.tick();
  }
 
- digest() {
- _changeDetector.detectChanges();
+ tick() {
+ this._changeDetector.detectChanges();
  }
 }