Make base::Base64Encode() return void

chrome/browser/managed_mode/managed_user_registration_utility.cc

Index: chrome/browser/managed_mode/managed_user_registration_utility.cc
diff --git a/chrome/browser/managed_mode/managed_user_registration_utility.cc b/chrome/browser/managed_mode/managed_user_registration_utility.cc
index fc198ac4315bebc40c9d66c6ea4c616049570d5e..9b6d6301e5653736e38982fba10c551ecc17f3de 100644
--- a/chrome/browser/managed_mode/managed_user_registration_utility.cc
+++ b/chrome/browser/managed_mode/managed_user_registration_utility.cc
@@ -150,9 +150,7 @@ ManagedUserRegistrationUtility::Create(Profile* profile) {
 // static
 std::string ManagedUserRegistrationUtility::GenerateNewManagedUserId() {
   std::string new_managed_user_id;
-  bool success = base::Base64Encode(base::RandBytesAsString(8),
-                                    &new_managed_user_id);
-  DCHECK(success);
+  base::Base64Encode(base::RandBytesAsString(8), &new_managed_user_id);
   return new_managed_user_id;
 }