sync: Re-implement getAllNodes WebUI function

chrome/browser/sync/glue/sync_backend_host_impl.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/glue/sync_backend_host_impl.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/invalidation/invalidation_service.h"
 #include "chrome/browser/invalidation/invalidation_service_factory.h"
@@ skipping 475 matching lines @@
 
 void SyncBackendHostImpl::DisableProtocolEventForwarding() {
   DCHECK(initialized());
   registrar_->sync_thread()->message_loop()->PostTask(
       FROM_HERE,
       base::Bind(
           &SyncBackendHostCore::DisableProtocolEventForwarding,
           core_));
 }
 
+void SyncBackendHostImpl::GetAllNodesForTypes(
+    syncer::ModelTypeSet types,
+    base::Callback<void(std::vector<syncer::ModelType>,
+                        ScopedVector<base::ListValue>)> callback) {
+  DCHECK(initialized());
+  registrar_->sync_thread()->message_loop()->PostTask(FROM_HERE,
+       base::Bind(
+           &SyncBackendHostCore::GetAllNodesForTypes,
+           core_,
+           types,
+           frontend_loop_->message_loop_proxy(),
+           callback));
+}
+
 void SyncBackendHostImpl::InitCore(scoped_ptr<DoInitializeOptions> options) {
   registrar_->sync_thread()->message_loop()->PostTask(FROM_HERE,
       base::Bind(&SyncBackendHostCore::DoInitialize,
                  core_.get(), base::Passed(&options)));
 }
 
 void SyncBackendHostImpl::RequestConfigureSyncer(
     syncer::ConfigureReason reason,
     syncer::ModelTypeSet to_download,
     syncer::ModelTypeSet to_purge,
@@ skipping 268 matching lines @@
 base::MessageLoop* SyncBackendHostImpl::GetSyncLoopForTesting() {
   return registrar_->sync_thread()->message_loop();
 }
 
 }  // namespace browser_sync
 
 #undef SDVLOG
 
 #undef SLOG