Change integration test notifications to use structured objects.

pkg/analysis_server/test/integration/analysis/get_errors.dart

Index: pkg/analysis_server/test/integration/analysis/get_errors.dart
diff --git a/pkg/analysis_server/test/integration/analysis/get_errors.dart b/pkg/analysis_server/test/integration/analysis/get_errors.dart
index 5508afe3ec96b76df91d434964a2df4011c0c287..591e8953c2f74fb1f801945d9d2453c7e81ea97d 100644
--- a/pkg/analysis_server/test/integration/analysis/get_errors.dart
+++ b/pkg/analysis_server/test/integration/analysis/get_errors.dart
@@ -33,9 +33,7 @@ main() {
     standardAnalysisSetup();
     Future finishTest() {
       return sendAnalysisGetErrors(pathname).then((result) {
-        expect(
-            result.errors.map((error) => error.toJson()),
-            equals(currentAnalysisErrors[pathname]));
+        expect(result.errors, equals(currentAnalysisErrors[pathname]));
       });
     }
     if (afterAnalysis) {