[Chrome OS] Refactor Canonicalize() method into base class to prepare for new Authenticator subclass

chrome/browser/chromeos/login/google_authenticator.cc

 // Copyright (c) 2010 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 "chrome/browser/chromeos/login/google_authenticator.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/lock.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/sha2.h"
-#include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/third_party/nss/blapi.h"
 #include "base/third_party/nss/sha256.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/chromeos/cros/cryptohome_library.h"
 #include "chrome/browser/chromeos/login/auth_response_handler.h"
 #include "chrome/browser/chromeos/login/authentication_notification_details.h"
 #include "chrome/browser/chromeos/login/login_status_consumer.h"
 #include "chrome/browser/chromeos/login/ownership_service.h"
@@ skipping 401 matching lines @@
                                       char* hex_string,
                                       const unsigned int len) {
   if (len < 2*binary_len)
     return false;
   memset(hex_string, 0, len);
   for (uint i = 0, j = 0; i < binary_len; i++, j+=2)
     snprintf(hex_string + j, len - j, "%02x", binary[i]);
   return true;
 }
 
-// static
-std::string GoogleAuthenticator::Canonicalize(
-    const std::string& email_address) {
-  std::vector<std::string> parts;
-  char at = '@';
-  SplitString(email_address, at, &parts);
-  DCHECK_EQ(parts.size(), 2U) << "email_address should have only one @";
-  RemoveChars(parts[0], ".", &parts[0]);
-  if (parts[0].find('+') != std::string::npos)
-    parts[0].erase(parts[0].find('+'));
-  std::string new_email = StringToLowerASCII(JoinString(parts, at));
-  LOG(INFO) << "Canonicalized " << email_address << " to " << new_email;
-  return new_email;
-}
-
 }  // namespace chromeos