Add HttpProtocolHandler and convert everything to use it

components/data_reduction_proxy/core/browser/data_reduction_proxy_test_utils.cc

 // Copyright 2015 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/data_reduction_proxy/core/browser/data_reduction_proxy_test_utils.h"
 
 #include <map>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 583 matching lines @@
 
 void DataReductionProxyTestContext::AttachToURLRequestContext(
       net::URLRequestContextStorage* request_context_storage) const {
   DCHECK(request_context_storage);
 
   // |request_context_storage| takes ownership of the network delegate.
   request_context_storage->set_network_delegate(
       io_data()->CreateNetworkDelegate(
           base::MakeUnique<net::TestNetworkDelegate>(), true));
 
+  std::unique_ptr<net::URLRequestJobFactory> job_factory_impl =
+      net::URLRequestJobFactoryImpl::CreateWithHttpProtocolHandlers();
+
   request_context_storage->set_job_factory(
       base::MakeUnique<net::URLRequestInterceptingJobFactory>(
-          std::unique_ptr<net::URLRequestJobFactory>(
-              new net::URLRequestJobFactoryImpl()),
-          io_data()->CreateInterceptor()));
+          std::move(job_factory_impl), io_data()->CreateInterceptor()));
 }
 
 void DataReductionProxyTestContext::
     EnableDataReductionProxyWithSecureProxyCheckSuccess() {
   DCHECK(mock_socket_factory_);
   // |settings_| needs to have been initialized, since a
   // |DataReductionProxyService| is needed in order to issue the secure proxy
   // check.
   DCHECK(data_reduction_proxy_service());
 
@@ skipping 90 matching lines @@
   configurator()->GetProxyConfig().proxy_rules().Apply(kHttpUrl, &proxy_info);
 
   std::vector<net::ProxyServer> proxies_without_direct;
   for (const net::ProxyServer& proxy : proxy_info.proxy_list().GetAll())
     if (proxy.is_valid() && !proxy.is_direct())
       proxies_without_direct.push_back(proxy);
   return proxies_without_direct;
 }
 
 }  // namespace data_reduction_proxy