Ensure that RESOLVED_UNITx ready once for every library.

pkg/analysis_server/test/analysis_server_test.dart

Index: pkg/analysis_server/test/analysis_server_test.dart
diff --git a/pkg/analysis_server/test/analysis_server_test.dart b/pkg/analysis_server/test/analysis_server_test.dart
index 9f75123e0e4e0dc4f0285bfc7c0971e990a72761..d96439019a90861a74ecb484181b7511de6ec2d5 100644
--- a/pkg/analysis_server/test/analysis_server_test.dart
+++ b/pkg/analysis_server/test/analysis_server_test.dart
@@ -221,7 +221,7 @@ import "../foo/foo.dart";
     File bar = resourceProvider.newFile('/bar/bar.dart', 'library lib;');
     Source barSource = bar.createSource();
     server.setAnalysisRoots('0', ['/foo', '/bar'], [], {});
-    return pumpEventQueue(200).then((_) {
+    return pumpEventQueue(500).then((_) {
       expect(server.statusAnalyzing, isFalse);
       // Make sure getAnalysisContext returns the proper context for each.
       AnalysisContext fooContext =