Simplify VersionInfo code, avoid hitting sandbox IPC constantly on Windows

chrome/browser/metrics/variations/variations_service.cc

 // Copyright (c) 2012 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/browser/metrics/variations/variations_service.h"
 
 #include <set>
 
 #include "base/build_time.h"
 #include "base/command_line.h"
@@ skipping 241 matching lines @@
 }
 
 bool VariationsService::CreateTrialsFromSeed() {
   create_trials_from_seed_called_ = true;
 
   variations::VariationsSeed seed;
   if (!seed_store_.LoadSeed(&seed))
     return false;
 
   const chrome::VersionInfo current_version_info;
-  if (!current_version_info.is_valid())
-    return false;
-
   const base::Version current_version(current_version_info.Version());
   if (!current_version.IsValid())
     return false;
 
   variations::VariationsSeedProcessor().CreateTrialsFromSeed(
       seed,
       g_browser_process->GetApplicationLocale(),
       GetReferenceDateForExpiryChecks(local_state_),
       current_version,
       GetChannelForVariations(),
@@ skipping 355 matching lines @@
 
 void VariationsService::RecordLastFetchTime() {
   // local_state_ is NULL in tests, so check it first.
   if (local_state_) {
     local_state_->SetInt64(prefs::kVariationsLastFetchTime,
                            base::Time::Now().ToInternalValue());
   }
 }
 
 }  // namespace chrome_variations