Convert RLZ to a buildflag header

chrome/browser/renderer_host/pepper/device_id_fetcher.cc

 // Copyright (c) 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 "chrome/browser/renderer_host/pepper/device_id_fetcher.h"
 
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "components/prefs/pref_service.h"
-#if defined(OS_CHROMEOS)
-#include "chromeos/cryptohome/system_salt_getter.h"
-#endif
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "crypto/encryptor.h"
 #include "crypto/random.h"
 #include "crypto/sha2.h"
 #include "ppapi/c/pp_errors.h"
-#if defined(ENABLE_RLZ)
+#include "rlz/features/features.h"
+
+#if defined(OS_CHROMEOS)
+#include "chromeos/cryptohome/system_salt_getter.h"
+#endif
+
+#if BUILDFLAG(ENABLE_RLZ)
 #include "rlz/lib/machine_id.h"
 #endif
 
 using content::BrowserPpapiHost;
 using content::BrowserThread;
 using content::RenderProcessHost;
 
 namespace chrome {
 
 namespace {
 
 const char kDRMIdentifierFile[] = "Pepper DRM ID.0";
 
 const uint32_t kSaltLength = 32;
 
 void GetMachineIDAsync(
     const base::Callback<void(const std::string&)>& callback) {
-#if defined(OS_WIN) && defined(ENABLE_RLZ)
+#if defined(OS_WIN) && BUILDFLAG(ENABLE_RLZ)
   std::string result;
   rlz_lib::GetMachineId(&result);
   callback.Run(result);
 #elif defined(OS_CHROMEOS)
   chromeos::SystemSaltGetter::Get()->GetSystemSalt(callback);
 #else
   // Not implemented for other platforms.
   NOTREACHED();
   callback.Run(std::string());
 #endif
@@ skipping 150 matching lines @@
         BrowserThread::IO,
         FROM_HERE,
         base::Bind(&DeviceIDFetcher::RunCallbackOnIOThread, this, id, result));
     return;
   }
   in_progress_ = false;
   callback_.Run(id, result);
 }
 
 }  // namespace chrome