Fix GN missing headers in //base

chrome/browser/component_updater/pnacl_component_installer.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/component_updater/pnacl_component_installer.h"
 
 #include <stdint.h>
 #include <string>
 #include <vector>
 
 #include "base/atomicops.h"
 #include "base/base_paths.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "base/version.h"
-#include "base/win/windows_version.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/common/chrome_paths.h"
 #include "components/component_updater/component_updater_service.h"
 #include "components/nacl/common/nacl_switches.h"
 #include "components/update_client/update_query_params.h"
 #include "components/update_client/utils.h"
 #include "content/public/browser/browser_thread.h"
 
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
 using content::BrowserThread;
 using update_client::CrxComponent;
 using update_client::UpdateQueryParams;
 
 namespace component_updater {
 
 namespace {
 
 // Name of the Pnacl component specified in the manifest.
 const char kPnaclManifestName[] = "PNaCl Translator";
@@ skipping 344 matching lines @@
 }  // namespace component_updater
 
 namespace pnacl {
 
 bool NeedsOnDemandUpdate() {
   return base::subtle::NoBarrier_Load(
              &component_updater::needs_on_demand_update) != 0;
 }
 
 }  // namespace pnacl