[Sync] Rename csync namespace to syncer

sync/test/engine/test_directory_setter_upper.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 "sync/test/engine/test_directory_setter_upper.h"
 
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
 #include "base/location.h"
 #include "base/string_util.h"
 #include "sync/syncable/directory.h"
 #include "sync/syncable/in_memory_directory_backing_store.h"
 #include "sync/syncable/read_transaction.h"
 #include "sync/test/null_transaction_observer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using syncable::NullTransactionObserver;
 using syncable::ReadTransaction;
 
-namespace csync {
+namespace syncer {
 
 TestDirectorySetterUpper::TestDirectorySetterUpper() : name_("Test") {}
 
 TestDirectorySetterUpper::~TestDirectorySetterUpper() {}
 
 void TestDirectorySetterUpper::SetUp() {
   directory_.reset(new syncable::Directory(&encryptor_, &handler_, NULL,
       new syncable::InMemoryDirectoryBackingStore(name_)));
   ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   ASSERT_EQ(syncable::OPENED, directory_->Open(
@@ skipping 21 matching lines @@
     syncable::ReadTransaction trans(FROM_HERE, directory());
     directory()->CheckTreeInvariants(&trans, false);
   }
   {
     // Check invariants for all items.
     syncable::ReadTransaction trans(FROM_HERE, directory());
     directory()->CheckTreeInvariants(&trans, true);
   }
 }
 
-}  // namespace csync
+}  // namespace syncer