Rename ClosureClassMaps to ClosureDataLookup

pkg/compiler/lib/src/ssa/graph_builder.dart

Index: pkg/compiler/lib/src/ssa/graph_builder.dart
diff --git a/pkg/compiler/lib/src/ssa/graph_builder.dart b/pkg/compiler/lib/src/ssa/graph_builder.dart
index 57f36ecf6f97627fd69317c8f8663d77312d7f1e..b199ce51cf0c63cdee883ea102d57f75ea4565b5 100644
--- a/pkg/compiler/lib/src/ssa/graph_builder.dart
+++ b/pkg/compiler/lib/src/ssa/graph_builder.dart
@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import '../closure.dart' show ClosureClassMaps;
+import '../closure.dart' show ClosureDataLookup;
 import '../constants/constant_system.dart';
 import '../common/codegen.dart' show CodegenRegistry;
 import '../common_elements.dart';
@@ -72,7 +72,7 @@ abstract class GraphBuilder {
   GlobalTypeInferenceResults get globalInferenceResults =>
       compiler.globalInference.results;
 
-  ClosureClassMaps get closureToClassMapper => compiler.closureToClassMapper;
+  ClosureDataLookup get closureDataLookup => compiler.closureDataLookup;
 
   NativeData get nativeData => closedWorld.nativeData;