Add HttpProtocolHandler and convert everything to use it

net/proxy/proxy_script_fetcher_impl_unittest.cc

 // Copyright (c) 2012 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 "net/proxy/proxy_script_fetcher_impl.h"
 
 #include <string>
 #include <utility>
 
 #include "base/compiler_specific.h"
@@ skipping 68 matching lines @@
     params.transport_security_state = transport_security_state();
     params.proxy_service = proxy_service();
     params.ssl_config_service = ssl_config_service();
     params.http_server_properties = http_server_properties();
     storage_.set_http_network_session(
         base::WrapUnique(new HttpNetworkSession(params)));
     storage_.set_http_transaction_factory(base::WrapUnique(
         new HttpCache(storage_.http_network_session(),
                       HttpCache::DefaultBackend::InMemory(0), false)));
     std::unique_ptr<URLRequestJobFactoryImpl> job_factory =
-        base::WrapUnique(new URLRequestJobFactoryImpl());
+        URLRequestJobFactoryImpl::CreateWithDefaultProtocolHandlers();
+
 #if !defined(DISABLE_FILE_SUPPORT)
     job_factory->SetProtocolHandler("file",
                                     base::WrapUnique(new FileProtocolHandler(
                                         base::ThreadTaskRunnerHandle::Get())));
 #endif
     storage_.set_job_factory(std::move(job_factory));
   }
 
   ~RequestContext() override { AssertNoURLRequests(); }
 
@@ skipping 379 matching lines @@
     base::string16 text;
     TestCompletionCallback callback;
     int result = pac_fetcher.Fetch(url, &text, callback.callback());
     EXPECT_EQ(ERR_FAILED, result);
   }
 }
 
 }  // namespace
 
 }  // namespace net