Remove use of deprecated mirror API from code that only runs against dart2js.

tests/compiler/dart2js_extra/mirror_printer_test.dart

 // Copyright (c) 2013, 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.
 
 /// Prints all information about all mirrors. This tests that it is possible to
 /// enumerate all reflective information without crashing.
 
 // Note: Adding imports below is fine for regression tests. For example,
 // 'crash_library_metadata.dart' is imported to ensure the compiler doesn't
 // crash.
@@ skipping 38 matching lines @@
   }
 
   String stringifyInstance(InstanceMirror mirror) {
     var reflectee = mirror.reflectee;
     if (reflectee is String) return '"${reflectee}"';
     if (reflectee is Null || reflectee is bool || reflectee is num ||
         reflectee is List || reflectee is Map) {
       return '$reflectee';
     }
     StringBuffer buffer = new StringBuffer();
-    Map<Symbol, VariableMirror> variables = mirror.type.variables;
+    Map<Symbol, DeclarationMirror> declarations = mirror.type.declarations;
     buffer
         ..write(n(mirror.type.simpleName))
         ..write('(');
     bool first = true;
-    variables.forEach((Symbol name, VariableMirror variable) {
+    declarations.forEach((Symbol name, DeclarationMirror declaration) {
+      if (declaration is! VariableMirror) return;
+      VariableMirror variable = declaration;
       if (variable.isStatic) return;
       // TODO(ahe): Include superclasses.
       if (first) {
         first = false;
       } else {
         buffer.write(', ');
       }
       buffer
           ..write(n(name))
           ..write(': ')
@@ skipping 48 matching lines @@
     w(';');
   }
 
   writeClass(ClassMirror mirror) {
     // TODO(ahe): Write 'abstract' if [mirror] is abstract.
     w('class ${n(mirror.simpleName)}');
     // TODO(ahe): Write superclass and interfaces.
     w(' {');
     bool first = true;
     indented(() {
-      for (DeclarationMirror declaration in mirror.members.values) {
+      for (DeclarationMirror declaration in mirror.declarations.values) {
         if (first) {
           first = false;
         } else {
           w('\n');
         }
         writeDeclaration(declaration);
       }
     });
     w('\n}\n');
   }
@@ skipping 14 matching lines @@
     } else if (declaration is MethodMirror) {
       writeMethod(declaration);
     } else {
       // TODO(ahe): Test other subclasses of DeclarationMirror.
       w('$declaration');
     }
   }
 
   writeLibrary(LibraryMirror library) {
     w('library ${n(library.simpleName)};\n\n');
-    library.members.values.forEach(writeDeclaration);
+    library.declarations.values
+        .where((d)=> d is! TypeMirror)
+        .forEach(writeDeclaration);
     w('\n');
   }
 
   static StringBuffer stringify(Map<Uri, LibraryMirror> libraries) {
     StringBuffer buffer = new StringBuffer();
     libraries.values.forEach(new MirrorPrinter(buffer).writeLibrary);
     return buffer;
   }
 }
 
 main() {
   print(MirrorPrinter.stringify(currentMirrorSystem().libraries));
   // Clear the nodes to avoid confusing the fine test framework (by "fine" I
   // mean something else) -- ahe.
   document.body.nodes.clear();
 }