Update the Angular/DI tests to latest from github.

third_party/pkg/angular/lib/perf/dev_tools_timeline.dart

Index: third_party/pkg/angular/lib/perf/dev_tools_timeline.dart
diff --git a/third_party/pkg/angular/lib/perf/dev_tools_timeline.dart b/third_party/pkg/angular/lib/perf/dev_tools_timeline.dart
index fa4c9e2346720bb21c37de7a4590cc14cbb9b581..3c046a207fe254651637449722947ebd74eb6e4b 100644
--- a/third_party/pkg/angular/lib/perf/dev_tools_timeline.dart
+++ b/third_party/pkg/angular/lib/perf/dev_tools_timeline.dart
@@ -4,9 +4,10 @@ class DevToolsTimelineProfiler extends Profiler {
   final dom.Console console = dom.window.console;
   String prefix = '';
 
-  int startTimer(String name, [String extraData]) {
+  String startTimer(String name, [String extraData]) {
     console.time('$prefix$name');
     prefix = '$prefix  ';
+    return name;
   }
 
   void stopTimer(dynamic name) {