Mark some analyzer/analysis_server tests as slow.

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index 13b1e2bfdef01d6656fcf655e1bcc554f1008dff..fb720591bdfd1ca8d8483c5a07df221f1874218e 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -107,11 +107,13 @@ third_party/angular_tests/browser_test: Pass, Slow # Large dart2js compile time
 typed_data/test/typed_buffers_test/01: Fail # Not supporting Int64List, Uint64List.
 analyzer/test/generated/engine_test: Skip # Slow
 analyzer/test/generated/static_type_warning_code_test: Pass, Slow
+analyzer/test/generated/compile_time_error_code_test: Pass, Slow
 
 analyzer/test/enum_test: Fail # Issue 21323
 
 analysis_server/test/search/element_references_test: Pass, Slow
 analysis_server/test/services/index/store/codec_test: Pass, Slow
+analysis_server/test/edit/assists_test: Pass, Slow
 
 # Analysis server integration tests don't make sense to run under
 # dart2js, since the code under test always runs in the Dart vm as a