fix(aot): Remove AuthBackend param for AOT support

Author: davideast

package.json

@@ -1,6 +1,6 @@
 {
   "name": "angularfire2",
-  "version": "2.0.0-beta.6",
+  "version": "2.0.0-beta.7-pre",
   "description": "",
   "main": "bundles/angularfire2.umd.js",
   "module": "index.js",
@@ -28,7 +28,7 @@
     "type": "git",
     "url": "git+https://github.com/angular/angularfire2.git"
   },
-  "author": "jeffbcross",
+  "author": "jeffbcross,davideast",
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/angular/angularfire2/issues"

src/angularfire2.ts

@@ -62,7 +62,7 @@ export function _getWindowLocation(){
 }
 
 export function _getAuthBackend(app: firebase.app.App): FirebaseSdkAuthBackend {
-  return new FirebaseSdkAuthBackend(app, false);
+  return new FirebaseSdkAuthBackend(app);
 }
 
 export function _getDefaultFirebase(config){

src/auth/firebase_sdk_auth_backend.ts

@@ -34,8 +34,7 @@ export class FirebaseSdkAuthBackend extends AuthBackend {
    * https://github.com/angular/angular/issues/12631
    * https://github.com/angular/angularfire2/issues/653
    **/
-  constructor( @Inject(FirebaseApp) _fbApp: any,
-    private _webWorkerMode = false) {
+  constructor(@Inject(FirebaseApp) _fbApp: any) {
     super();
     this._fbAuth = _fbApp.auth();
   }