dart2js: Use an abstract Name class for names in the generated JavaScript ast.

pkg/compiler/lib/src/js_backend/frequency_namer.dart

Index: pkg/compiler/lib/src/js_backend/frequency_namer.dart
diff --git a/pkg/compiler/lib/src/js_backend/frequency_namer.dart b/pkg/compiler/lib/src/js_backend/frequency_namer.dart
new file mode 100644
index 0000000000000000000000000000000000000000..fb2c28a464510effb35536bf0fb52a3007fa5db8
--- /dev/null
+++ b/pkg/compiler/lib/src/js_backend/frequency_namer.dart
@@ -0,0 +1,18 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file

[floitsch, 2015/06/22 17:43:44]

2015

[herhut, 2015/06/23 13:26:30]

Done.

+// 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.
+
+part of js_backend;
+
+class FrequencyNamer extends Namer {
+
+	FrequencyNamer(Compiler compiler) : super(compiler);

[floitsch, 2015/06/22 17:43:44]

indentation.

[herhut, 2015/06/23 13:26:30]

Done.

+
+	jsAst.Name getFreshName(String proposedName,
+	                           Set<String> usedNames,
+	                           Map<String, String> suggestedNames,
+	                           {bool sanitizeForNatives: false,
+	                           bool sanitizeForAnnotations: false}) {
+		return null;
+	}
+}