Update the Angular/DI tests to latest from github.

third_party/pkg/angular/lib/playback/playback_http.dart

 library angular.playback.playback_http;
 
 import 'dart:async';
 import 'dart:convert' show JSON;
 import 'dart:html';
 
 import 'package:angular/core_dom/module.dart';
 import 'package:angular/core/service.dart';
 import 'package:angular/mock/module.dart' as mock;
 
 import 'package:angular/playback/playback_data.dart' as playback_data;
 
 @NgInjectableService()
 class PlaybackHttpBackendConfig {
   requestKey(String url,
-                 {String method, bool withCredentials, String responseType,
-                 String mimeType, Map<String, String> requestHeaders, sendData,
-                 void onProgress(ProgressEvent e)}) {
+             {String method, bool withCredentials, String responseType,
+             String mimeType, Map<String, String> requestHeaders, sendData,
+             void onProgress(ProgressEvent e)}) {
     return JSON.encode({
         "url": url,
         "method": method,
         "requestHeaders": requestHeaders,
         "data": sendData
     });
   }
 }
 
 // HELP! The DI system is getting in the way.  We want
 // the HttpBackend, but it will be implemented by ourselves.
 class HttpBackendWrapper {
   HttpBackend backend;
-  HttpBackendWrapper(HttpBackend this.backend);
+  HttpBackendWrapper(this.backend);
 }
 
 class RecordingHttpBackend implements HttpBackend {
 
   HttpBackend _prodBackend;
   PlaybackHttpBackendConfig _config;
 
-  RecordingHttpBackend(HttpBackendWrapper wrapper, this._config) {
-    this._prodBackend = wrapper.backend;
-  }
+  RecordingHttpBackend(HttpBackendWrapper wrapper, this._config)
+      : _prodBackend = wrapper.backend;
 
   Future request(String url,
                  {String method, bool withCredentials, String responseType,
                  String mimeType, Map<String, String> requestHeaders, sendData,
                  void onProgress(ProgressEvent e)}) {
     return _prodBackend.request(url,
         method: method,
         withCredentials: withCredentials,
         responseType: responseType,
         mimeType: mimeType,
@@ skipping 37 matching lines @@
                  void onProgress(ProgressEvent e)}) {
     var key = _config.requestKey(url,
         method: method,
         withCredentials: withCredentials,
         responseType: responseType,
         mimeType: mimeType,
         requestHeaders: requestHeaders,
         sendData: sendData,
         onProgress: onProgress);
 
-    if (!data.containsKey(key)) {
-      throw ["Request is not recorded $key"];
-    }
+    if (!data.containsKey(key)) throw ["Request is not recorded $key"];
     var playback = data[key];
     return new Future.value(
         new mock.MockHttpRequest(
             playback['status'],
             playback['data'],
             playback['headers']));
   }
 }