dart2dart Preproces placeholders instead of renaming them lazily,

tests/compiler/dart2js/unparser_test.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.
 
 #import('dart:uri');
 #import('parser_helper.dart');
 #import("../../../lib/compiler/compiler.dart");
 #import("../../../lib/compiler/implementation/tree/tree.dart");
 
 testUnparse(String statement) {
@@ skipping 355 matching lines @@
   a.foo();
   var b = new A.fromFoo();
   b.foo();
   var GREATVAR = b.myliba;
   b.mylist;
   a = getA();
   topfoo();
   mylib.topfoo();
 }
 ''';
-  var expectedResult = @'topfoo(){}p_topfoo(){var x=5;}A getA()=> null;'
-      @'main(){var a=new A(); a.foo(); var b=new p_A.fromFoo(); b.foo(); '
-          @'var GREATVAR=b.myliba; b.mylist; a=getA(); p_topfoo(); topfoo();}'
-      @'class p_A{p_A.fromFoo(){}List<p_A> mylist;num foo(){}A myliba;}'
-      @'class A{foo(){}}';
+  var expectedResult = 'topfoo(){}p_topfoo(){var x=5;}p_A getA()=> null;main(){var a=new p_A(); a.foo(); var b=new A.fromFoo(); b.foo(); var GREATVAR=b.myliba; b.mylist; a=getA(); p_topfoo(); topfoo();}class A{A.fromFoo(){}List<A> mylist;num foo(){}p_A myliba;}class p_A{foo(){}}';
   testDart2DartWithLibrary(mainSrc, librarySrc,
       (String result) { Expect.equals(expectedResult, result); });
 }
 
 testDefaultClassWithArgs() {
   testDart2Dart('main(){var result=new IA<String>();}'
       'interface IA<T> default A<T extends Object>{IA();}'
       'class A<T extends Object> implements IA<T>{factory A(){}}');
 }
 
@@ skipping 28 matching lines @@
   testGetSet();
   testFactoryConstructor();
   testAbstractClass();
   testConflictSendsRename();
   testNoConflictSendsRename();
   testConflictLibraryClassRename();
   testDefaultClassWithArgs();
   testClassExtendsWithArgs();
   testStaticInvocation();
 }