Network service: start the process as early as possible.

content/browser/service_manager/service_manager_context.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 "content/browser/service_manager/service_manager_context.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 
@@ skipping 339 matching lines @@
       "media", base::Bind(&StartServiceInGpuProcess, "media"));
 #endif
 
   packaged_services_connection_->AddServiceRequestHandler(
       shape_detection::mojom::kServiceName,
       base::Bind(&StartServiceInGpuProcess,
                  shape_detection::mojom::kServiceName));
 
   packaged_services_connection_->Start();
   ServiceManagerConnection::GetForProcess()->Start();
+
+  // Start the network service process as soon as possible, since it is critical
+  // to start up performance.
+  ServiceManagerConnection::GetForProcess()->GetConnector()->StartService(
+      mojom::kNetworkServiceName);
 }
 
 ServiceManagerContext::~ServiceManagerContext() {
   // NOTE: The in-process ServiceManager MUST be destroyed before the browser
   // process-wide ServiceManagerConnection. Otherwise it's possible for the
   // ServiceManager to receive connection requests for service:content_browser
   // which it may attempt to service by launching a new instance of the browser.
   if (in_process_context_)
     in_process_context_->ShutDown();
   if (ServiceManagerConnection::GetForProcess())
     ServiceManagerConnection::DestroyForProcess();
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                           base::Bind(&DestroyConnectorOnIOThread));
 }
 
 // static
 service_manager::Connector* ServiceManagerContext::GetConnectorForIOThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return g_io_thread_connector.Get().get();
 }
 
 }  // namespace content