Remove backends.

compiler/java/com/google/dart/compiler/backend/js/ast/JsForIn.java

Index: compiler/java/com/google/dart/compiler/backend/js/ast/JsForIn.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/ast/JsForIn.java b/compiler/java/com/google/dart/compiler/backend/js/ast/JsForIn.java
deleted file mode 100644
index 646e349885c8f21d1518738906e6407740002bc1..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/ast/JsForIn.java
+++ /dev/null
@@ -1,71 +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.ast;
-
-/**
- * Represents a JavaScript for..in statement.
- */
-public class JsForIn extends JsStatement {
-
-  private JsStatement body;
-  private JsExpression iterExpr;
-  private JsExpression objExpr;
-
-  // Optional: the name of a new iterator variable to introduce
-  private final JsName iterVarName;
-
-  public JsForIn() {
-    this(null);
-  }
-
-  public JsForIn(JsName iterVarName) {
-    this.iterVarName = iterVarName;
-  }
-
-  public JsStatement getBody() {
-    return body;
-  }
-
-  public JsExpression getIterExpr() {
-    return iterExpr;
-  }
-
-  public JsName getIterVarName() {
-    return iterVarName;
-  }
-
-  public JsExpression getObjExpr() {
-    return objExpr;
-  }
-
-  public void setBody(JsStatement body) {
-    this.body = body;
-  }
-
-  public void setIterExpr(JsExpression iterExpr) {
-    this.iterExpr = iterExpr;
-  }
-
-  public void setObjExpr(JsExpression objExpr) {
-    this.objExpr = objExpr;
-  }
-
-  @Override
-  public void traverse(JsVisitor v, JsContext ctx) {
-    if (v.visit(this, ctx)) {
-      if (iterExpr != null) {
-        iterExpr = v.acceptLvalue(iterExpr);
-      }
-      objExpr = v.accept(objExpr);
-      body = v.accept(body);
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public NodeKind getKind() {
-    return NodeKind.FOR_IN;
-  }
-}