Use GN buildflags and features to configure account consistency

chrome/common/url_constants.h

 // 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.
 
 // Contains constants for known URLs and portions thereof.
 
 #ifndef CHROME_COMMON_URL_CONSTANTS_H_
 #define CHROME_COMMON_URL_CONSTANTS_H_
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
 #include "chrome/common/features.h"
+#include "components/signin/core/common/signin_features.h"
 #include "content/public/common/url_constants.h"
 #include "media/media_features.h"
 #include "ppapi/features/features.h"
 #include "printing/features/features.h"
 
 namespace chrome {
 
 // chrome: URLs (including schemes). Should be kept in sync with the
 // components below.
 extern const char kChromeUIAboutURL[];
@@ skipping 223 matching lines @@
 extern const char kChromeUIUserActionsHost[];
 extern const char kChromeUIVersionHost[];
 extern const char kChromeUIWelcomeHost[];
 extern const char kChromeUIWelcomeWin10Host[];
 extern const char kChromeUIWorkersHost[];
 
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 extern const char kChromeUIPrintHost[];
 #endif  // ENABLE_PRINT_PREVIEW
 
+#if BUILDFLAG(ENABLE_DICE_SUPPORT)
+extern const char kChromeUISigninDiceInternalsHost[];
+#endif
+
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)
-extern const char kChromeUISigninDiceInternalsHost[];
 extern const char kChromeUIDiscardsHost[];
 #endif
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 extern const char kChromeUILinuxProxyConfigHost[];
 #endif
 
 #if defined(OS_LINUX) || defined(OS_ANDROID)
 extern const char kChromeUISandboxHost[];
 #endif
@@ skipping 357 matching lines @@
 extern const char kChooserUsbOverviewURL[];
 
 #if defined(OS_CHROMEOS)
 // The URL for EOL notification
 extern const char kEolNotificationURL[];
 #endif
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_URL_CONSTANTS_H_