[Sync] Move network-related code from core/ to engine/net/.

components/sync/core/http_bridge_network_resources.cc

-// Copyright 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 "components/sync/core/http_bridge_network_resources.h"
-
-#include "base/memory/ptr_util.h"
-#include "components/sync/base/cancelation_signal.h"
-#include "components/sync/core/http_bridge.h"
-#include "components/sync/core/http_post_provider_factory.h"
-#include "net/url_request/url_request_context_getter.h"
-
-namespace syncer {
-
-HttpBridgeNetworkResources::~HttpBridgeNetworkResources() {}
-
-std::unique_ptr<HttpPostProviderFactory>
-HttpBridgeNetworkResources::GetHttpPostProviderFactory(
-    const scoped_refptr<net::URLRequestContextGetter>& baseline_context_getter,
-    const NetworkTimeUpdateCallback& network_time_update_callback,
-    CancelationSignal* cancelation_signal) {
-  return base::WrapUnique<HttpPostProviderFactory>(
-      new HttpBridgeFactory(baseline_context_getter,
-                            network_time_update_callback, cancelation_signal));
-}
-
-}  // namespace syncer