diff --git a/lib/runtime/dart_sdk.sum b/lib/runtime/dart_sdk.sum
new file mode 100644
index 00000000..394bad4a
Binary files /dev/null and b/lib/runtime/dart_sdk.sum differ
diff --git a/tool/input_sdk/lib/core/core.dart b/tool/input_sdk/lib/core/core.dart
index 7afcfb3d..deeae3ba 100644
--- a/tool/input_sdk/lib/core/core.dart
+++ b/tool/input_sdk/lib/core/core.dart
@@ -155,6 +155,7 @@ library dart.core;
 import "dart:collection";
 import "dart:_internal" hide Symbol;
 import "dart:_internal" as internal show Symbol;
+import 'dart:_js_helper' show NoInline;
 import "dart:convert" show
   Encoding, ASCII, LATIN1, UTF8,
   BASE64, StringConversionSink, ChunkedConversionSink;
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index 3faed0c1..60da2700 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -4,7 +4,6 @@
 [error] Invalid override. The type of ChunkedConverter.bind ((dynamic) → dynamic) is not a subtype of Converter<S, T>.bind ((Stream<S>) → Stream<T>). (dart:convert/chunked_conversion.dart, line 14, col 3)
 [error] Invalid override. The type of ChunkedConverter.bind ((dynamic) → dynamic) is not a subtype of StreamTransformer<S, T>.bind ((Stream<S>) → Stream<T>). (dart:convert/chunked_conversion.dart, line 14, col 3)
 [error] Invalid override. The type of ChunkedConverter.startChunkedConversion ((dynamic) → dynamic) is not a subtype of Converter<S, T>.startChunkedConversion ((Sink<T>) → Sink<S>). (dart:convert/chunked_conversion.dart, line 15, col 3)
-[error] Annotation can be only constant variable or constant constructor invocation (dart:core/stacktrace.dart, line 43, col 3)
 [error] Invalid override. The type of FileList.[]= ((int, File) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 16868, col 3)
 [error] Invalid override. The type of HtmlCollection.[]= ((int, Node) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 18903, col 3)
 [error] Invalid override. The type of MimeTypeArray.[]= ((int, MimeType) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 23817, col 3)