Rename ClosureClassMaps to ClosureDataLookup

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 aa3a5ba692f2c0be69316011b6ef91449c0c6465..b591b4042bd5aa8550d3c77d7260fa1742475abc 100644
--- a/pkg/compiler/lib/src/compiler.dart
+++ b/pkg/compiler/lib/src/compiler.dart
@@ -144,7 +144,7 @@ abstract class Compiler {
   LibraryLoaderTask libraryLoader;
   SerializationTask serialization;
   ResolverTask resolver;
-  closureMapping.ClosureTask closureToClassMapper;
+  closureMapping.ClosureTask closureDataLookup;
   TypeCheckerTask checker;
   GlobalTypeInferenceTask globalInference;
   JavaScriptBackend backend;
@@ -226,7 +226,7 @@ abstract class Compiler {
           measurer),
       parser = new ParserTask(this),
       resolver = createResolverTask(),
-      closureToClassMapper = new closureMapping.ClosureTask(this),
+      closureDataLookup = new closureMapping.ClosureTask(this),
       checker = new TypeCheckerTask(this),
       globalInference = new GlobalTypeInferenceTask(this),
       constants = backend.constantCompilerTask,