Use GN buildflags and features to configure account consistency

components/signin/core/browser/BUILD.gn

 # Copyright 2014 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.
 
+import("//components/signin/features.gni")
+
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
 # Split into its own target to allow the Identity Service to depend on it in
 # typemaps without introducing a dependency on all of
 # //components/signin/core/browser, which is undesirable. In the long term
 # this file will move to be part of the Identity Service client library.
 static_library("account_info") {
   sources = [
@@ skipping 67 matching lines @@
     "webdata/token_service_table.cc",
     "webdata/token_service_table.h",
     "webdata/token_web_data.cc",
     "webdata/token_web_data.h",
   ]
 
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   public_deps = [
     ":account_info",
+    "//base",
+    "//components/content_settings/core/browser",
+    "//components/content_settings/core/common",
+    "//components/invalidation/public",
+    "//components/keyed_service/core",
+    "//components/prefs",
     "//components/signin/core/account_id",
     "//components/signin/core/common",
+    "//components/signin/core/common:signin_features",
+    "//google_apis",
+    "//net",
+    "//url",
   ]
   deps = [
-    "//base",
     "//base:i18n",
-    "//components/content_settings/core/browser",
-    "//components/content_settings/core/common",
     "//components/data_use_measurement/core",
     "//components/google/core/browser",
-    "//components/invalidation/public",
-    "//components/keyed_service/core",
     "//components/metrics",
     "//components/os_crypt",
     "//components/pref_registry",
-    "//components/prefs",
     "//components/webdata/common",
     "//crypto",
-    "//google_apis",
-    "//net",
     "//sql",
     "//third_party/icu",
   ]
 
   if (is_chromeos) {
     sources -= [
       "signin_manager.cc",
       "signin_status_metrics_provider.cc",
       "signin_status_metrics_provider_delegate.cc",
     ]
   }
 
-  if (is_android || is_ios) {
+  if (!enable_dice_support) {
     sources -= [
       "dice_header_helper.cc",
       "dice_header_helper.h",
     ]
   }
 
   if (is_android) {
     sources -= [
       "child_account_info_fetcher_impl.cc",
       "child_account_info_fetcher_impl.h",
@@ skipping 46 matching lines @@
     "webdata/token_service_table_unittest.cc",
   ]
 
   deps = [
     ":test_support",
     "//base/test:test_support",
     "//components/content_settings/core/browser",
     "//components/os_crypt:test_support",
     "//components/pref_registry:pref_registry",
     "//components/signin/core/common",
+    "//components/signin/core/common:signin_features",
     "//components/sync_preferences:test_support",
     "//testing/gmock",
   ]
 
   if (is_chromeos) {
     sources -= [
       "account_investigator_unittest.cc",
       "signin_status_metrics_provider_unittest.cc",
     ]
   }
 }
 
 if (is_android) {
   java_cpp_enum("investigated_scenario_java") {
     sources = [
       "signin_investigator.h",
     ]
   }
 }