fix(test): adds longer timers for NgZone and PromisePipe tests (IE11)

Closes #2055

modules/angular2/src/dom/browser_adapter.dart

@@ -326,4 +326,7 @@ class BrowserDomAdapter extends GenericBrowserDomAdapter {
     var baseUri = Uri.parse(uri);
     return baseUri.path;
   }
+  String getUserAgent() {
+    return window.navigator.userAgent;
+  }
 }

modules/angular2/src/dom/browser_adapter.ts

@@ -372,6 +372,9 @@ getLocation() {
 getBaseHref() {
   return relativePath(document.baseURI);
 }
+getUserAgent(): string {
+  return window.navigator.userAgent;
+}
 }
 
 // based on urlUtils.js in AngularJS 1

modules/angular2/src/dom/dom_adapter.ts

@@ -114,4 +114,5 @@ export class DomAdapter {
   getHistory() { throw _abstract(); }
   getLocation() { throw _abstract(); }
   getBaseHref() { throw _abstract(); }
+  getUserAgent() { throw _abstract(); }
 }

modules/angular2/src/dom/html_adapter.dart

@@ -303,4 +303,7 @@ class Html5LibDomAdapter implements DomAdapter {
   getBaseHref() {
     throw 'not implemented';
   }
+  String getUserAgent() {
+    throw 'not implemented';
+  }
 }

modules/angular2/src/dom/parse5_adapter.cjs

@@ -540,6 +540,9 @@ export class Parse5DomAdapter extends DomAdapter {
   getLocation() {
     throw 'not implemented';
   }
+  getUserAgent() {
+    return "Fake user agent";
+  }
 }
 
 //TODO: build a proper list, this one is all the keys of a HTMLInputElement