Remove backends.

compiler/java/com/google/dart/compiler/ast/viz/ConsoleWriter.java

Index: compiler/java/com/google/dart/compiler/ast/viz/ConsoleWriter.java
diff --git a/compiler/java/com/google/dart/compiler/ast/viz/ConsoleWriter.java b/compiler/java/com/google/dart/compiler/ast/viz/ConsoleWriter.java
index 5161563340b0277e03756cb047d79212c4ebdb1b..961cb017fa9984c7e6f0ea558f1fe4816720c316 100644
--- a/compiler/java/com/google/dart/compiler/ast/viz/ConsoleWriter.java
+++ b/compiler/java/com/google/dart/compiler/ast/viz/ConsoleWriter.java
@@ -1,18 +1,17 @@
-// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
+// 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.
 
 package com.google.dart.compiler.ast.viz;
 
+import com.google.dart.compiler.ast.DartNode;
+import com.google.dart.compiler.ast.DartUnit;
+
 import java.io.IOException;
 import java.io.OutputStreamWriter;
 import java.util.HashMap;
 import java.util.Map;
 
-import com.google.common.io.Closeables;
-import com.google.dart.compiler.ast.DartNode;
-import com.google.dart.compiler.ast.DartUnit;
-
 /**
  * Write the AST in to System out.
  */