Chain SummaryResynthesizer(s).

pkg/analyzer/lib/src/summary/summary_sdk.dart

Index: pkg/analyzer/lib/src/summary/summary_sdk.dart
diff --git a/pkg/analyzer/lib/src/summary/summary_sdk.dart b/pkg/analyzer/lib/src/summary/summary_sdk.dart
index 4d9b9feb6ce4ce6b59fabe8221debbe1dcc68723..e45cbc691ca549f5bb718f5c6b31e30fc0cb9f56 100644
--- a/pkg/analyzer/lib/src/summary/summary_sdk.dart
+++ b/pkg/analyzer/lib/src/summary/summary_sdk.dart
@@ -46,8 +46,14 @@ class SummarySdkAnalysisContext extends SdkAnalysisContext {
   @override
   bool aboutToComputeResult(CacheEntry entry, ResultDescriptor result) {
     if (resynthesizer == null) {
-      resynthesizer = new SummaryResynthesizer(this, typeProvider,
-          _getPrelinkedSummary, _getUnlinkedSummary, sourceFactory);
+      resynthesizer = new SummaryResynthesizer(
+          null,
+          this,
+          typeProvider,
+          (String uri) => uri.startsWith('dart:'),
+          _getPrelinkedSummary,
+          _getUnlinkedSummary,
+          sourceFactory);
       _buildCoreLibrary();
       _buildAsyncLibrary();
     }