Add integration tests for edit.getAssists and edit.getFixes.

pkg/analysis_server/test/timing/timing_framework.dart

Index: pkg/analysis_server/test/timing/timing_framework.dart
diff --git a/pkg/analysis_server/test/timing/timing_framework.dart b/pkg/analysis_server/test/timing/timing_framework.dart
index 8861f9487a1f3e0a9cd348983acb5b2cc1c82a70..4f860620881602f2f0c75b3dc4739398d584fa38 100644
--- a/pkg/analysis_server/test/timing/timing_framework.dart
+++ b/pkg/analysis_server/test/timing/timing_framework.dart
@@ -195,7 +195,7 @@ abstract class TimingTest extends IntegrationTestMixin {
       serverConnected.complete();
     });
     skipShutdown = true;
-    return server.start(/*profileServer: true*/).then((params) {
+    return server.start(/*profileServer: true*/).then((_) {
       server.listenToOutput(dispatchNotification);
       server.exitCode.then((_) {
         skipShutdown = true;