[Chrome OS] Respect periods in google apps account names

chrome/browser/chromeos/login/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/authenticator.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
 
 namespace chromeos {
 class LoginStatusConsumer;
 
+// static
+const char Authenticator::kSpecialCaseDomain[] = "gmail.com";
+
 Authenticator::Authenticator(LoginStatusConsumer* consumer)
     : consumer_(consumer) {
 }
 
 Authenticator::~Authenticator() {}
 
 // static
 std::string Authenticator::Canonicalize(const std::string& email_address) {
   std::vector<std::string> parts;
   char at = '@';
   base::SplitString(email_address, at, &parts);
   DCHECK_EQ(parts.size(), 2U) << "email_address should have only one @";
-  RemoveChars(parts[0], ".", &parts[0]);
+  if (parts[1] == kSpecialCaseDomain)  // only strip '.' for gmail accounts.
+    RemoveChars(parts[0], ".", &parts[0]);
+  // Technically the '+' handling here could be removed, as the google
+  // account servers do not tolerate them, so we don't need to either.
+  // TODO(cmasone): remove this, unless this code becomes obsolete altogether.
   if (parts[0].find('+') != std::string::npos)
     parts[0].erase(parts[0].find('+'));
   std::string new_email = StringToLowerASCII(JoinString(parts, at));
   VLOG(1) << "Canonicalized " << email_address << " to " << new_email;
   return new_email;
 }
 
 }  // namespace chromeos