Add integration tests for analysis.getErrors.

pkg/analysis_server/test/integration/server_domain_inttest.dart

Index: pkg/analysis_server/test/integration/server_domain_inttest.dart
diff --git a/pkg/analysis_server/test/integration/server_domain_inttest.dart b/pkg/analysis_server/test/integration/server_domain_inttest.dart
index 8b8c6a23f3131cdc4ec4d3633639ec3c171f0c2d..29e0295e746beb14c57e7d029d0160c0b9ae4b68 100644
--- a/pkg/analysis_server/test/integration/server_domain_inttest.dart
+++ b/pkg/analysis_server/test/integration/server_domain_inttest.dart
@@ -16,7 +16,7 @@ import 'integration_tests.dart';
 class ServerDomainIntegrationTest extends AbstractAnalysisServerIntegrationTest
     {
   test_getVersion() {
-    return server.send('server.getVersion', null).then((response) {
+    return server.send(SERVER_GET_VERSION, null).then((response) {
       expect(response, isServerGetVersionResult);
     });
   }