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

chrome/browser/supervised_user/child_accounts/child_account_service_android.cc

 // 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.
 
 #include "chrome/browser/supervised_user/child_accounts/child_account_service_android.h"
 
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/supervised_user/child_accounts/child_account_service.h"
 #include "chrome/browser/supervised_user/child_accounts/child_account_service_factory.h"
 #include "jni/ChildAccountService_jni.h"
 
+jboolean IsChildAccountDetectionEnabled(JNIEnv* env, jobject obj) {
+  return ChildAccountService::IsChildAccountDetectionEnabled();
+}
+
 void OnChildAccountSigninComplete(JNIEnv* env, jobject obj) {
   VLOG(1) << "OnChildAccountSigninComplete";
 
   Profile* profile = ProfileManager::GetLastUsedProfile();
   ChildAccountServiceFactory::GetForProfile(profile)->SetIsChildAccount(true);
 }
 
 bool RegisterChildAccountService(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }