[Sync] Removing duplicated includes between cc and h files.

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 <memory>
-
 #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 "components/sync/core/network_time_update_callback.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