Leverage profile's http network session's HttpAuthCache to support proxy auth.

google_apis/gcm/engine/connection_factory_impl_unittest.cc

 // Copyright (c) 2013 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 "google_apis/gcm/engine/connection_factory_impl.h"
 
 #include <cmath>
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 141 matching lines @@
   FakeConnectionHandler* fake_handler_;
   FakeGCMStatsRecorder dummy_recorder_;
 };
 
 TestConnectionFactoryImpl::TestConnectionFactoryImpl(
     const base::Closure& finished_callback)
     : ConnectionFactoryImpl(BuildEndpoints(),
                             net::BackoffEntry::Policy(),
                             NULL,
                             NULL,
+                            NULL,
                             &dummy_recorder_),
       connect_result_(net::ERR_UNEXPECTED),
       num_expected_attempts_(0),
       connections_fulfilled_(true),
       delay_login_(false),
       finished_callback_(finished_callback),
       fake_handler_(NULL) {
   // Set a non-null time.
   tick_clock_.Advance(base::TimeDelta::FromMilliseconds(1));
 }
@@ skipping 371 matching lines @@
   // When the network returns, attempt to connect.
   factory()->SetConnectResult(net::OK);
   factory()->OnNetworkChanged(net::NetworkChangeNotifier::CONNECTION_4G);
   WaitForConnections();
 
   EXPECT_TRUE(factory()->IsEndpointReachable());
   EXPECT_TRUE(factory()->NextRetryAttempt().is_null());
 }
 
 }  // namespace gcm