Revert of ChildAccountService[Java] delegates everything to native side.

chrome/browser/supervised_user/child_accounts/child_account_service.h

Index: chrome/browser/supervised_user/child_accounts/child_account_service.h
diff --git a/chrome/browser/supervised_user/child_accounts/child_account_service.h b/chrome/browser/supervised_user/child_accounts/child_account_service.h
index ecc91e743bb0eaa24aee5b35aa990b67115f41fd..ddd830339f48bf40c24097744681659ee4f8f238 100644
--- a/chrome/browser/supervised_user/child_accounts/child_account_service.h
+++ b/chrome/browser/supervised_user/child_accounts/child_account_service.h
@@ -46,6 +46,11 @@
 
   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);
+
   // Responds whether at least one request for child status was successful.
   // And we got answer whether the profile belongs to a child account or not.
   bool IsChildAccountStatusKnown();
@@ -63,9 +68,6 @@
 
   // SupervisedUserService::Delegate implementation.
   bool SetActive(bool active) override;
-
-  // Sets whether the signed-in account is a child account.
-  void SetIsChildAccount(bool is_child_account);
 
   // AccountTrackerService::Observer implementation.
   void OnAccountUpdated(const AccountInfo& info) override;