sync: Specialize functions that fetch type root

components/sync_driver/generic_change_processor_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 "components/sync_driver/generic_change_processor.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
@@ skipping 120 matching lines @@
   }
 
   virtual void TearDown() OVERRIDE {
     mock_attachment_service_ = NULL;
     test_user_share_.TearDown();
   }
 
   void BuildChildNodes(int n) {
     syncer::WriteTransaction trans(FROM_HERE, user_share());
     syncer::ReadNode root(&trans);
-    ASSERT_EQ(syncer::BaseNode::INIT_OK,
-              root.InitByTagLookup(syncer::ModelTypeToRootTag(kType)));
+    ASSERT_EQ(syncer::BaseNode::INIT_OK, root.InitTypeRoot(kType));
     for (int i = 0; i < n; ++i) {
       syncer::WriteNode node(&trans);
       node.InitUniqueByCreation(kType, root, base::StringPrintf("node%05d", i));
     }
   }
 
   GenericChangeProcessor* change_processor() {
     return change_processor_.get();
   }
 
@@ skipping 257 matching lines @@
   syncer::ReadNode node(&read_transaction);
   ASSERT_EQ(node.InitByClientTagLookup(syncer::PREFERENCES, tag),
             syncer::BaseNode::INIT_OK);
   syncer::AttachmentIdList attachment_ids = node.GetAttachmentIds();
   EXPECT_EQ(1U, attachment_ids.size());
 }
 
 }  // namespace
 
 }  // namespace browser_sync