Fix GN missing headers in //base

components/nacl/browser/nacl_browser.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/nacl/browser/nacl_browser.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/files/file_proxy.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/path_service.h"
 #include "base/pickle.h"
 #include "base/rand_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
-#include "base/win/windows_version.h"
 #include "build/build_config.h"
 #include "content/public/browser/browser_thread.h"
 #include "url/gurl.h"
 
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
 namespace {
 
 // An arbitrary delay to coalesce multiple writes to the cache.
 const int kValidationCacheCoalescingTimeMS = 6000;
 const char kValidationCacheSequenceName[] = "NaClValidationCache";
 const base::FilePath::CharType kValidationCacheFileName[] =
     FILE_PATH_LITERAL("nacl_validation_cache.bin");
 
 const bool kValidationCacheEnabledByDefault = true;
 
@@ skipping 531 matching lines @@
 bool NaClBrowser::IsThrottled() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   if (crash_times_.size() != kMaxCrashesPerInterval) {
     return false;
   }
   base::TimeDelta delta = base::Time::Now() - crash_times_.front();
   return delta.InSeconds() <= kCrashesIntervalInSeconds;
 }
 
 }  // namespace nacl