Move session service and supervised users to buildflags.

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index a383321a64df4f937f4e49fddc517e6f6c82e4ff..461049dd9526709d50191a90b0cc623195f6ba66 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -49,6 +49,7 @@
 #include "chrome/browser/web_data_service_factory.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/features.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
@@ -117,7 +118,7 @@
 #include "chrome/browser/signin/oauth2_token_service_delegate_android.h"
 #endif
 
-#if defined(ENABLE_SUPERVISED_USERS)
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
 #include "chrome/browser/supervised_user/supervised_user_constants.h"
 #include "chrome/browser/supervised_user/supervised_user_pref_store.h"
 #include "chrome/browser/supervised_user/supervised_user_settings_service.h"
@@ -435,7 +436,7 @@ void TestingProfile::Init() {
   ChromeBrowserMainExtraPartsProfiles::
       EnsureBrowserContextKeyedServiceFactoriesBuilt();
 
-#if defined(ENABLE_SUPERVISED_USERS)
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
   if (!IsOffTheRecord()) {
     SupervisedUserSettingsService* settings_service =
         SupervisedUserSettingsServiceFactory::GetForProfile(this);
@@ -740,7 +741,7 @@ bool TestingProfile::IsSupervised() const {
 }
 
 bool TestingProfile::IsChild() const {
-#if defined(ENABLE_SUPERVISED_USERS)
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
   return supervised_user_id_ == supervised_users::kChildAccountSUID;
 #else
   return false;