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::WrapUnique(new net::TestNetworkDelegate()), true));
 
+  std::unique_ptr<net::URLRequestJobFactory> job_factory_impl =
+      net::URLRequestJobFactoryImpl::CreateWithDefaultProtocolHandlers();
+
   request_context_storage->set_job_factory(
       base::WrapUnique(new 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_);
   // This won't actually update the proxy config when using a test configurator.
   DCHECK(!(test_context_flags_ &
            DataReductionProxyTestContext::USE_TEST_CONFIGURATOR));
   // |settings_| needs to have been initialized, since a
   // |DataReductionProxyService| is needed in order to issue the secure proxy
@@ skipping 84 matching lines @@
     : prefs_(prefs) {
   DCHECK(prefs);
 }
 
 void DataReductionProxyTestContext::TestConfigStorer::StoreSerializedConfig(
     const std::string& serialized_config) {
   prefs_->SetString(prefs::kDataReductionProxyConfig, serialized_config);
 }
 
 }  // namespace data_reduction_proxy