Remove Chromium's custom closure runner.

third_party/closure_compiler/runner/src/com/google/javascript/jscomp/ChromePassConfig.java

-// Copyright 2014 The Chromium Authors. 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.javascript.jscomp;
-
-import java.util.List;
-
-public class ChromePassConfig extends PassConfig.PassConfigDelegate {
-    public ChromePassConfig(CompilerOptions options) {
-        super(new DefaultPassConfig(options));
-    }
-
-    @Override
-    protected List<PassFactory> getChecks() {
-        List<PassFactory> checks = super.getChecks();
-        checks.add(0, chromePass);
-        return checks;
-    }
-
-    final static PassFactory chromePass = new PassFactory("chromePass", true) {
-        @Override
-        protected CompilerPass create(AbstractCompiler compiler) {
-            return new ChromePass(compiler);
-        }
-    };
-}