Expose local sync mode status in the chrome://sync-internals page.

components/sync/engine_impl/all_status.cc

 // Copyright (c) 2012 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/sync/engine_impl/all_status.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "components/sync/engine_impl/net/server_connection_manager.h"
@@ skipping 167 matching lines @@
       status_.nudge_source_notification++;
       return;
     case NUDGE_SOURCE_UNKNOWN:
       break;
   }
   // If we're here, the source is most likely
   // NUDGE_SOURCE_UNKNOWN. That shouldn't happen.
   NOTREACHED();
 }
 
+void AllStatus::SetLocalBackendFolder(const std::string& folder) {
+  ScopedStatusLock lock(this);
+  status_.local_sync_folder = folder;
+}
+
 ScopedStatusLock::ScopedStatusLock(AllStatus* allstatus)
     : allstatus_(allstatus) {
   allstatus->mutex_.Acquire();
 }
 
 ScopedStatusLock::~ScopedStatusLock() {
   allstatus_->mutex_.Release();
 }
 
 }  // namespace syncer