Revert "Add a histogram (Net.PacResultForStrippedUrl) that estimates how often PAC scripts depend o…

net/data/proxy_resolver_v8_tracing_unittest/return_url_as_proxy.js

-// Copyright 2016 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.
-
-// This proxy script returns a proxy list that encodes the URL that was passed
-// in.
-
-function convertUrlToHostname(url) {
-  // Turn the URL into something that resembles a hostname.
-  var result = encodeURIComponent(url);
-  return result.replace(/%/g, "x");
-}
-
-function FindProxyForURL(url, host) {
-  return "PROXY " + convertUrlToHostname(url) + ":99";
-}