[SyncFS] Replace LOG_INFO to LOG_VERBOSE in SyncFS stuff

chrome/browser/sync_file_system/drive_backend/sync_engine.cc

 // Copyright 2013 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/sync_file_system/drive_backend/sync_engine.h"
 
 #include "base/bind.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/values.h"
 #include "chrome/browser/drive/drive_api_service.h"
@@ skipping 640 matching lines @@
 }
 
 void SyncEngine::UpdateServiceState(RemoteServiceState state,
                                     const std::string& description) {
   RemoteServiceState old_state = GetCurrentState();
   service_state_ = state;
 
   if (old_state == GetCurrentState())
     return;
 
-  util::Log(logging::LOG_INFO, FROM_HERE,
+  util::Log(logging::LOG_VERBOSE, FROM_HERE,
             "Service state changed: %d->%d: %s",
             old_state, GetCurrentState(), description.c_str());
   FOR_EACH_OBSERVER(
       Observer, service_observers_,
       OnRemoteServiceStateUpdated(GetCurrentState(), description));
 }
 
 void SyncEngine::UpdateRegisteredApps() {
   if (!extension_service_)
     return;
@@ skipping 27 matching lines @@
         tracker.tracker_kind() == TRACKER_KIND_APP_ROOT;
     if (is_app_enabled && !is_app_root_tracker_enabled)
       EnableOrigin(origin, base::Bind(&EmptyStatusCallback));
     else if (!is_app_enabled && is_app_root_tracker_enabled)
       DisableOrigin(origin, base::Bind(&EmptyStatusCallback));
   }
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system