Re-enable child account detection, now behind a flag.

chrome/browser/supervised_user/child_accounts/child_account_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SUPERVISED_USER_CHILD_ACCOUNTS_CHILD_ACCOUNT_SERVICE_H_
 #define CHROME_BROWSER_SUPERVISED_USER_CHILD_ACCOUNTS_CHILD_ACCOUNT_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 18 matching lines @@
 // This class handles detection of child accounts (on sign-in as well as on
 // browser restart), and triggers the appropriate behavior (e.g. enable the
 // supervised user experience, fetch information about the parent(s)).
 class ChildAccountService : public KeyedService,
                             public FamilyInfoFetcher::Consumer,
                             public SigninManagerBase::Observer,
                             public SupervisedUserService::Delegate {
  public:
   ~ChildAccountService() override;
 
+  static bool IsChildAccountDetectionEnabled();
+
   void Init();
 
   // Sets whether the signed-in account is a child account.
   // Public so it can be called on platforms where child account detection
   // happens outside of this class (like Android).
   void SetIsChildAccount(bool is_child_account);
 
   // KeyedService:
   void Shutdown() override;
 
@@ skipping 59 matching lines @@
   // If fetching the family info fails, retry with exponential backoff.
   base::OneShotTimer<ChildAccountService> family_fetch_timer_;
   net::BackoffEntry family_fetch_backoff_;
 
   base::WeakPtrFactory<ChildAccountService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildAccountService);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_CHILD_ACCOUNTS_CHILD_ACCOUNT_SERVICE_H_