pkg/compiler: fix imports

pkg/compiler/lib/src/cps_ir/scalar_replacement.dart

 // Copyright (c) 2015, 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 dart2js.cps_ir.scalar_replacement;
 
-import 'optimizers.dart';
-
 import 'dart:collection' show Queue;
 
 import '../common.dart';
 import '../compiler.dart' as dart2js show Compiler;
 import '../constants/values.dart';
 import '../elements/elements.dart';
 import '../types/types.dart';
 import '../world.dart' show World;
 import 'cps_ir_nodes.dart';
+import 'optimizers.dart';
 
 /**
  * Replaces aggregates with a set of local values.  Performs inlining of
  * single-use closures to generate more replaceable aggregates.
  */
 class ScalarReplacer extends Pass {
   String get passName => 'Scalar replacement';
 
   final InternalErrorFunction _internalError;
   final World _classWorld;
@@ skipping 188 matching lines @@
 class ScalarReplacementRemovalVisitor extends TrampolineRecursiveVisitor {
   ScalarReplacementVisitor process;
 
   ScalarReplacementRemovalVisitor(this.process);
 
   processReference(Reference reference) {
     process.reconsider(reference.definition);
     reference.unlink();
   }
 }