sync: Re-implement getAllNodes WebUI function

chrome/browser/sync/glue/sync_backend_host_core.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_core.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/sync/glue/device_info.h"
@@ skipping 622 matching lines @@
 }
 
 void SyncBackendHostCore::DeleteSyncDataFolder() {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   if (base::DirectoryExists(sync_data_folder_path_)) {
     if (!base::DeleteFile(sync_data_folder_path_, true))
       SLOG(DFATAL) << "Could not delete the Sync Data folder.";
   }
 }
 
+void SyncBackendHostCore::GetAllNodesForTypes(
+    syncer::ModelTypeSet types,
+    scoped_refptr<base::SequencedTaskRunner> task_runner,
+    base::Callback<void(const std::vector<syncer::ModelType>& type,
+                        ScopedVector<base::ListValue>)> callback) {
+  std::vector<syncer::ModelType> types_vector;
+  ScopedVector<base::ListValue> node_lists;
+
+  syncer::ModelSafeRoutingInfo routes;
+  registrar_->GetModelSafeRoutingInfo(&routes);
+  syncer::ModelTypeSet enabled_types = GetRoutingInfoTypes(routes);
+
+  for (syncer::ModelTypeSet::Iterator it = types.First(); it.Good(); it.Inc()) {
+    types_vector.push_back(it.Get());
+    if (!enabled_types.Has(it.Get())) {
+      node_lists.push_back(new base::ListValue());
+    } else {
+      node_lists.push_back(
+          sync_manager_->GetAllNodesForType(it.Get()).release());
+    }
+  }
+
+  task_runner->PostTask(
+      FROM_HERE,
+      base::Bind(callback, types_vector, base::Passed(&node_lists)));
+}
+
 void SyncBackendHostCore::StartSavingChanges() {
   // We may already be shut down.
   if (!sync_loop_)
     return;
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   DCHECK(!save_changes_timer_.get());
   save_changes_timer_.reset(new base::RepeatingTimer<SyncBackendHostCore>());
   save_changes_timer_->Start(FROM_HERE,
       base::TimeDelta::FromSeconds(kSaveChangesIntervalSeconds),
       this, &SyncBackendHostCore::SaveChanges);
 }
 
 void SyncBackendHostCore::SaveChanges() {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   sync_manager_->SaveChanges();
 }
 
 }  // namespace browser_sync