More tweaks in attempt to debug the reason of failing getNavigation() tests.

pkg/analysis_server/test/mocks.dart

Index: pkg/analysis_server/test/mocks.dart
diff --git a/pkg/analysis_server/test/mocks.dart b/pkg/analysis_server/test/mocks.dart
index 3358b475840219bb57e90828d28a36053c28b8e3..1ce0d9fe87d403b5bc7e5aee7eefd5ca319c0850 100644
--- a/pkg/analysis_server/test/mocks.dart
+++ b/pkg/analysis_server/test/mocks.dart
@@ -58,7 +58,7 @@ Matcher isResponseSuccess(String id) => new _IsResponseSuccess(id);
  * times. By default, this should pump the event queue enough times to allow
  * any code to run, as long as it's not waiting on some external event.
  */
-Future pumpEventQueue([int times = 500]) {
+Future pumpEventQueue([int times = 5000]) {

[Brian Wilkerson, 2015/08/11 18:13:01]

I'm a little concerned that changing the limit will hide the problem, but...

   if (times == 0) return new Future.value();
   // We use a delayed future to allow microtask events to finish. The
   // Future.value or Future() constructors use scheduleMicrotask themselves and
@@ -229,8 +229,8 @@ class MockServerChannel implements ServerCommunicationChannel {
   @override
   void listen(void onRequest(Request request),
       {Function onError, void onDone()}) {
-    requestController.stream.listen(onRequest,
-        onError: onError, onDone: onDone);
+    requestController.stream
+        .listen(onRequest, onError: onError, onDone: onDone);
   }
 
   @override
@@ -330,8 +330,8 @@ class MockSocket<T> implements WebSocket {
       controller.close().then((_) => twin.controller.close());
 
   StreamSubscription<T> listen(void onData(T event),
-      {Function onError, void onDone(), bool cancelOnError}) => stream.listen(
-          onData,
+          {Function onError, void onDone(), bool cancelOnError}) =>
+      stream.listen(onData,
           onError: onError, onDone: onDone, cancelOnError: cancelOnError);
 
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);