Don't recreate CoreTypes in transformers. Pass it in.

pkg/analyzer/lib/src/fasta/analyzer_loader.dart

Index: pkg/analyzer/lib/src/fasta/analyzer_loader.dart
diff --git a/pkg/analyzer/lib/src/fasta/analyzer_loader.dart b/pkg/analyzer/lib/src/fasta/analyzer_loader.dart
index 49f754364bb93e9fc3792a3a16c6cb146ec79970..f7878293d8996b0059aaf1920beb872fa7a453bd 100644
--- a/pkg/analyzer/lib/src/fasta/analyzer_loader.dart
+++ b/pkg/analyzer/lib/src/fasta/analyzer_loader.dart
@@ -22,6 +22,8 @@ import 'package:analyzer/src/fasta/element_store.dart' show ElementStore;
 
 import 'analyzer_diet_listener.dart' show AnalyzerDietListener;
 
+import 'package:kernel/core_types.dart' show CoreTypes;
+
 class AnalyzerLoader<L> extends SourceLoader<L> {
   ElementStore elementStore;
 
@@ -32,6 +34,8 @@ class AnalyzerLoader<L> extends SourceLoader<L> {
   void computeHierarchy(Program program) {
     elementStore = new ElementStore(coreLibrary, builders);
     ticker.logMs("Built analyzer element model.");
+    coreTypes = new CoreTypes(program);
+    ticker.logMs("Computed core types");
   }
 
   @override