Remove backends.

compiler/java/com/google/dart/compiler/backend/js/JsSourceGenerationVisitor.java

Index: compiler/java/com/google/dart/compiler/backend/js/JsSourceGenerationVisitor.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/JsSourceGenerationVisitor.java b/compiler/java/com/google/dart/compiler/backend/js/JsSourceGenerationVisitor.java
deleted file mode 100644
index ebb836a7228defc119af68adc8b76b783e5ce51c..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/JsSourceGenerationVisitor.java
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (c) 2011, 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.backend.js;
-
-import com.google.dart.compiler.backend.js.ast.JsBlock;
-import com.google.dart.compiler.backend.js.ast.JsContext;
-import com.google.dart.compiler.backend.js.ast.JsProgram;
-import com.google.dart.compiler.backend.js.ast.JsProgramFragment;
-import com.google.dart.compiler.util.TextOutput;
-
-/**
- * Generates JavaScript source from an AST.
- */
-public class JsSourceGenerationVisitor extends JsToStringGenerationVisitor {
-
-  public JsSourceGenerationVisitor(TextOutput out) {
-    super(out);
-  }
-
-  @Override
-  public boolean visit(JsProgram x, JsContext ctx) {
-    // Descend naturally.
-    return true;
-  }
-
-  @Override
-  public boolean visit(JsProgramFragment x, JsContext ctx) {
-    // Descend naturally.
-    return true;
-  }
-
-  @Override
-  public boolean visit(JsBlock x, JsContext ctx) {
-    printJsBlock(x, false, true);
-    return false;
-  }
-}