Move pref_proxy_config_tracker_impl_unittest to components/proxy_config

components/proxy_config/pref_proxy_config_tracker_impl_unittest.cc

 // Copyright (c) 2011 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.
 
 #include "components/proxy_config/pref_proxy_config_tracker_impl.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 345 matching lines @@
     CheckResolvedProxyMatches(&config, GURL("http://google.com"),
                               test.http_proxy_info);
     CheckResolvedProxyMatches(&config, GURL("https://google.com"),
                               test.https_proxy_info);
     CheckResolvedProxyMatches(&config, GURL("ftp://google.com"),
                               test.ftp_proxy_info);
   }
 }
 
 }  // namespace