Remove backends.

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

Index: compiler/java/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java b/compiler/java/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java
deleted file mode 100644
index 8cb9f7e6d52c579d8dac3749e4c882c139a1dc76..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/ast/JsArrayLiteral.java
+++ /dev/null
@@ -1,67 +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;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Represents a JavaScript expression for array literals.
- */
-public final class JsArrayLiteral extends JsLiteral {
-
-  private final List<JsExpression> exprs = new ArrayList<JsExpression>();
-
-  public JsArrayLiteral() {
-    super();
-  }
-
-  public List<JsExpression> getExpressions() {
-    return exprs;
-  }
-
-  @Override
-  public boolean hasSideEffects() {
-    for (JsExpression expr : exprs) {
-      if (expr.hasSideEffects()) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  @Override
-  public boolean isBooleanFalse() {
-    return false;
-  }
-
-  @Override
-  public boolean isBooleanTrue() {
-    return true;
-  }
-
-  @Override
-  public boolean isDefinitelyNotNull() {
-    return true;
-  }
-
-  @Override
-  public boolean isDefinitelyNull() {
-    return false;
-  }
-
-  @Override
-  public void traverse(JsVisitor v, JsContext ctx) {
-    if (v.visit(this, ctx)) {
-      v.acceptWithInsertRemove(exprs);
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public NodeKind getKind() {
-    return NodeKind.ARRAY;
-  }
-}