Prefix resolution_types with Resolution.

pkg/compiler/lib/src/js_backend/backend_impact.dart

Index: pkg/compiler/lib/src/js_backend/backend_impact.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend_impact.dart b/pkg/compiler/lib/src/js_backend/backend_impact.dart
index 11823fdef609a7524f65c6bb74376168b6d7b5bb..be5e9cf5379d90c390f317bfa5a85924d7662509 100644
--- a/pkg/compiler/lib/src/js_backend/backend_impact.dart
+++ b/pkg/compiler/lib/src/js_backend/backend_impact.dart
@@ -7,7 +7,7 @@ library dart2js.js_helpers.impact;
 import '../common/names.dart';
 import '../compiler.dart' show Compiler;
 import '../core_types.dart' show CommonElements;
-import '../elements/resolution_types.dart' show InterfaceType;
+import '../elements/resolution_types.dart' show ResolutionInterfaceType;
 import '../elements/elements.dart' show ClassElement, Element;
 import '../universe/selector.dart';
 import '../util/enumset.dart';
@@ -26,7 +26,7 @@ class BackendImpact {
   final List<Element> staticUses;
   final List<Element> globalUses;
   final List<Selector> dynamicUses;
-  final List<InterfaceType> instantiatedTypes;
+  final List<ResolutionInterfaceType> instantiatedTypes;
   final List<ClassElement> instantiatedClasses;
   final List<ClassElement> globalClasses;
   final List<BackendImpact> otherImpacts;
@@ -36,7 +36,7 @@ class BackendImpact {
       {this.staticUses: const <Element>[],
       this.globalUses: const <Element>[],
       this.dynamicUses: const <Selector>[],
-      this.instantiatedTypes: const <InterfaceType>[],
+      this.instantiatedTypes: const <ResolutionInterfaceType>[],
       this.instantiatedClasses: const <ClassElement>[],
       this.globalClasses: const <ClassElement>[],
       this.otherImpacts: const <BackendImpact>[],