Remove bad check from UkmService::EnableReporting

components/ukm/ukm_service.cc

 // Copyright 2017 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 "components/ukm/ukm_service.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 
@@ skipping 108 matching lines @@
 
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&UkmService::StartInitTask, self_ptr_factory_.GetWeakPtr()),
       base::TimeDelta::FromSeconds(kInitializationDelaySeconds));
 }
 
 void UkmService::EnableReporting() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "UkmService::EnableReporting";
-#if defined(OFFICIAL_BUILD)
-  CHECK(false);  // Remove this once UKM checks sync state.
-#endif
   if (!initialize_started_)
     Initialize();
   scheduler_->Start();
 }
 
 void UkmService::DisableReporting() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "UkmService::DisableReporting";
   scheduler_->Stop();
   Flush();
@@ skipping 99 matching lines @@
     persisted_logs_.SerializeLogs();
   }
 
   // Error 400 indicates a problem with the log, not with the server, so
   // don't consider that a sign that the server is in trouble.
   bool server_is_healthy = upload_succeeded || response_code == 400;
   scheduler_->UploadFinished(server_is_healthy, !persisted_logs_.empty());
 }
 
 }  // namespace ukm