Convert enable_one_click_signin to new buildflag system

chrome/common/url_constants.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/common/url_constants.h"
 
 #include <algorithm>
 
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 409 matching lines @@
     "https://support.google.com/chrome/?p=help&ctx=settings";
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_CHROMEOS)
 const char kChromeAccessibilityHelpURL[] =
     "https://support.google.com/chromebook/?p=accessibility_menu";
 const char kChromeAccessibilitySettingsURL[] =
     "/chromevox/background/options.html";
 #endif  // defined(OS_CHROMEOS)
 
-#if defined(ENABLE_ONE_CLICK_SIGNIN)
+#if BUILDFLAG(ENABLE_ONE_CLICK_SIGNIN)
 const char kChromeSyncLearnMoreURL[] =
     "https://support.google.com/chrome/answer/165139";
 
 const char kChromeSyncMergeTroubleshootingURL[] =
     "https://support.google.com/chrome/answer/1181420#merge";
-#endif  // defined(ENABLE_ONE_CLICK_SIGNIN)
+#endif  // BUILDFLAG(ENABLE_ONE_CLICK_SIGNIN)
 
 #if defined(OS_MACOSX)
 const char kChromeEnterpriseSignInLearnMoreURL[] =
     "https://support.google.com/chromebook/answer/1331549";
 #endif
 
 const char kResetProfileSettingsLearnMoreURL[] =
     "https://support.google.com/chrome/?p=ui_reset_settings";
 
 const char kAutomaticSettingsResetLearnMoreURL[] =
@@ skipping 316 matching lines @@
 
 #if defined(OS_WIN)
 const char kWindowsXPVistaDeprecationURL[] =
     "https://support.google.com/chrome/answer/95346";
 #endif
 
 const char kChooserBluetoothOverviewURL[] =
     "https://support.google.com/chrome?p=bluetooth";
 
 }  // namespace chrome