sync: Specialize functions that fetch type root

sync/internal_api/sync_rollback_manager_unittest.cc

 // Copyright 2014 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 "sync/internal_api/sync_rollback_manager.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "sync/internal_api/public/read_node.h"
 #include "sync/internal_api/public/read_transaction.h"
 #include "sync/internal_api/public/sessions/sync_session_snapshot.h"
@@ skipping 73 matching lines @@
   MOCK_METHOD1(OnProtocolEvent, void(const ProtocolEvent&));
 
   void OnConfigDone(bool success) {
     EXPECT_TRUE(success);
   }
 
   int64 CreateEntry(UserShare* user_share, ModelType type,
                     const std::string& client_tag) {
     WriteTransaction trans(FROM_HERE, user_share);
     ReadNode type_root(&trans);
-    EXPECT_EQ(BaseNode::INIT_OK,
-              type_root.InitByTagLookup(ModelTypeToRootTag(type)));
+    EXPECT_EQ(BaseNode::INIT_OK, type_root.InitTypeRoot(type));
 
     WriteNode node(&trans);
     EXPECT_EQ(WriteNode::INIT_SUCCESS,
               node.InitUniqueByCreation(type, type_root, client_tag));
     return node.GetEntry()->GetMetahandle();
   }
 
   void InitManager(SyncManager* manager, ModelTypeSet types,
                    TestChangeDelegate* delegate) {
     manager->AddObserver(this);
@@ skipping 110 matching lines @@
   // Verify new entry was not persisted.
   rollback_manager.reset(new SyncRollbackManager);
   InitManager(rollback_manager.get(), ModelTypeSet(PREFERENCES), &delegate);
   EXPECT_FALSE(VerifyEntry(rollback_manager->GetUserShare(), PREFERENCES,
                            "pref2"));
 }
 
 }  // anonymous namespace
 
 }  // namespace syncer