[Sync] Move sync/{internal_api,syncable} into syncer namespace

sync/test/engine/test_syncable_utils.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.
 
 // Utilities to verify the state of items in unit tests.
 
 #include "sync/test/engine/test_syncable_utils.h"
 
 #include "sync/syncable/base_transaction.h"
 #include "sync/syncable/directory.h"
 #include "sync/syncable/entry.h"
 
 using std::string;
 
+namespace syncer {
 namespace syncable {
 
 int CountEntriesWithName(BaseTransaction* rtrans,
                          const syncable::Id& parent_id,
                          const string& name) {
   Directory::ChildHandles child_handles;
   rtrans->directory()->GetChildHandlesById(rtrans, parent_id, &child_handles);
   if (child_handles.size() <= 0) {
     return 0;
   }
@@ skipping 30 matching lines @@
 }
 
 Id GetOnlyEntryWithName(BaseTransaction* rtrans,
                         const syncable::Id& parent_id,
                         const string& name) {
   CHECK(1 == CountEntriesWithName(rtrans, parent_id, name));
   return GetFirstEntryWithName(rtrans, parent_id, name);
 }
 
 }  // namespace syncable
+}  // namespace syncer