Simplify VersionInfo code, avoid hitting sandbox IPC constantly on Windows

chrome/service/net/service_url_request_context_getter.cc

 // Copyright 2014 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 "chrome/service/net/service_url_request_context_getter.h"
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 #include <sys/utsname.h>
 #endif
 
@@ skipping 62 matching lines @@
 #endif
   );  // NOLINT
 
   return os_cpu;
 }
 
 // Returns the default user agent.
 std::string MakeUserAgentForServiceProcess() {
   std::string user_agent;
   chrome::VersionInfo version_info;
-  if (!version_info.is_valid()) {
-    DLOG(ERROR) << "Unable to create chrome::VersionInfo object";
-  }
   std::string extra_version_info;
   if (!version_info.IsOfficialBuild())
     extra_version_info = "-devel";
   base::StringAppendF(&user_agent,
                       "Chrome Service %s(%s)%s %s ",
                       version_info.Version().c_str(),
                       version_info.LastChange().c_str(),
                       extra_version_info.c_str(),
                       BuildOSCpuInfo().c_str());
   return user_agent;
@@ skipping 25 matching lines @@
   }
   return url_request_context_.get();
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 ServiceURLRequestContextGetter::GetNetworkTaskRunner() const {
   return network_task_runner_;
 }
 
 ServiceURLRequestContextGetter::~ServiceURLRequestContextGetter() {}