[Sync] Rename csync namespace to syncer

sync/util/nigori.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/util/nigori.h"
 
 #include <sstream>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "base/string_util.h"
 #include "base/sys_byteorder.h"
 #include "crypto/encryptor.h"
 #include "crypto/hmac.h"
 #include "crypto/symmetric_key.h"
 
 using base::Base64Encode;
 using base::Base64Decode;
 using base::RandInt;
 using crypto::Encryptor;
 using crypto::HMAC;
 using crypto::SymmetricKey;
 
-namespace csync {
+namespace syncer {
 
 // NigoriStream simplifies the concatenation operation of the Nigori protocol.
 class NigoriStream {
  public:
   // Append the big-endian representation of the length of |value| with 32 bits,
   // followed by |value| itself to the stream.
   NigoriStream& operator<<(const std::string& value) {
     uint32 size = base::HostToNet32(value.size());
     stream_.write((char *) &size, sizeof(uint32));
     stream_ << value;
@@ skipping 210 matching lines @@
                         std::string* mac_key) const {
   DCHECK(user_key);
   DCHECK(encryption_key);
   DCHECK(mac_key);
 
   return user_key_->GetRawKey(user_key) &&
       encryption_key_->GetRawKey(encryption_key) &&
       mac_key_->GetRawKey(mac_key);
 }
 
-}  // namespace csync
+}  // namespace syncer