Remove Registry

pkg/compiler/lib/src/compiler.dart

Index: pkg/compiler/lib/src/compiler.dart
diff --git a/pkg/compiler/lib/src/compiler.dart b/pkg/compiler/lib/src/compiler.dart
index c2f91fee4123a802c082b4713603f0b074dadf7c..d1ba883391091f59a7b49a8d8a2ee01bc2e47919 100644
--- a/pkg/compiler/lib/src/compiler.dart
+++ b/pkg/compiler/lib/src/compiler.dart
@@ -13,7 +13,6 @@ import 'common/backend_api.dart' show Backend;
 import 'common/codegen.dart' show CodegenWorkItem;
 import 'common/names.dart' show Selectors;
 import 'common/names.dart' show Identifiers, Uris;
-import 'common/registry.dart' show Registry;
 import 'common/resolution.dart'
     show
         ParsingContext,
@@ -2213,7 +2212,7 @@ class _CompilerResolution implements Resolution {
   }
 }
 
-class GlobalDependencyRegistry extends Registry {
+class GlobalDependencyRegistry {
   Setlet<Element> _otherDependencies;
 
   GlobalDependencyRegistry();