Separate SyncData methods into three groups, local, remote, and common.

chrome/browser/extensions/extension_sync_bundle.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 "chrome/browser/extensions/extension_sync_bundle.h"
 
 #include "base/location.h"
 #include "chrome/browser/extensions/extension_sync_service.h"
 #include "chrome/common/extensions/sync_helper.h"
 #include "extensions/common/extension.h"
@@ skipping 41 matching lines @@
 
 void ExtensionSyncBundle::ProcessDeletion(
     std::string extension_id, const syncer::SyncChange& sync_change) {
   RemoveExtension(extension_id);
   sync_processor_->ProcessSyncChanges(FROM_HERE,
                                       syncer::SyncChangeList(1, sync_change));
 }
 
 syncer::SyncChange ExtensionSyncBundle::CreateSyncChange(
     const syncer::SyncData& sync_data) {
-  if (HasExtensionId(sync_data.GetTag())) {
+  const syncer::SyncDataLocal sync_data_local(sync_data);
+  if (HasExtensionId(sync_data_local.GetTag())) {
     return syncer::SyncChange(FROM_HERE,
                               syncer::SyncChange::ACTION_UPDATE,
                               sync_data);
   } else {
-    AddExtension(sync_data.GetTag());
+    AddExtension(sync_data_local.GetTag());
     return syncer::SyncChange(FROM_HERE,
                               syncer::SyncChange::ACTION_ADD,
                               sync_data);
   }
 }
 
 syncer::SyncDataList ExtensionSyncBundle::GetAllSyncData() const {
   std::vector<ExtensionSyncData> extension_sync_data =
       extension_sync_service_->GetExtensionSyncDataList();
   syncer::SyncDataList result(extension_sync_data.size());
@@ skipping 84 matching lines @@
 void ExtensionSyncBundle::RemoveExtension(const std::string& id) {
   synced_extensions_.erase(id);
 }
 
 void ExtensionSyncBundle::MarkPendingExtensionSynced(const std::string& id) {
   pending_sync_data_.erase(id);
   synced_extensions_.insert(id);
 }
 
 }  // namespace extensions