pkg/compiler: fix imports

pkg/compiler/lib/src/closure.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 library closureToClassMapper;
 
-import 'common.dart';
 import 'common/names.dart' show Identifiers;
 import 'common/resolution.dart' show ParsingContext, Resolution;
 import 'common/tasks.dart' show CompilerTask;
+import 'common.dart';
 import 'compiler.dart' show Compiler;
 import 'constants/expressions.dart';
 import 'dart_types.dart';
 import 'elements/elements.dart';
 import 'elements/modelx.dart'
     show BaseFunctionElementX, ClassElementX, ElementX, LocalFunctionElementX;
 import 'elements/visitor.dart' show ElementVisitor;
 import 'js_backend/js_backend.dart' show JavaScriptBackend;
 import 'resolution/tree_elements.dart' show TreeElements;
 import 'tokens/token.dart' show Token;
 import 'tree/tree.dart';
+import 'universe/universe.dart' show Universe;
 import 'util/util.dart';
-import 'universe/universe.dart' show Universe;
 
 class ClosureTask extends CompilerTask {
   Map<Node, ClosureClassMap> closureMappingCache;
   Compiler compiler;
   ClosureTask(Compiler compiler)
       : closureMappingCache = new Map<Node, ClosureClassMap>(),
         compiler = compiler,
         super(compiler.measurer);
 
   String get name => "Closure Simplifier";
@@ skipping 1158 matching lines @@
 ///
 /// Move the below classes to a JS model eventually.
 ///
 abstract class JSEntity implements Entity {
   Entity get declaredEntity;
 }
 
 abstract class PrivatelyNamedJSEntity implements JSEntity {
   Entity get rootOfScope;
 }