Delete some unused code found by -Wunused-function

chrome/browser/ui/webui/sync_setup_handler.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 "chrome/browser/ui/webui/sync_setup_handler.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 148 matching lines @@
       return false;
     }
     if (!result->GetString("passphrase", &config->passphrase)) {
       DLOG(ERROR) << "GetConfiguration() not passed a passphrase value";
       return false;
     }
   }
   return true;
 }
 
-bool GetPassphrase(const std::string& json, std::string* passphrase) {
-  scoped_ptr<Value> parsed_value(base::JSONReader::Read(json));
-  if (!parsed_value.get() || !parsed_value->IsType(Value::TYPE_DICTIONARY))
-    return false;
-
-  DictionaryValue* result = static_cast<DictionaryValue*>(parsed_value.get());
-  return result->GetString("passphrase", passphrase);
-}
-
 string16 NormalizeUserName(const string16& user) {
   if (user.find_first_of(ASCIIToUTF16("@")) != string16::npos)
     return user;
   return user + ASCIIToUTF16("@") + ASCIIToUTF16(kDefaultSigninDomain);
 }
 
 bool AreUserNamesEqual(const string16& user1, const string16& user2) {
   return NormalizeUserName(user1) == NormalizeUserName(user2);
 }
 
@@ skipping 899 matching lines @@
     if (i != current_profile_index && AreUserNamesEqual(
         cache.GetUserNameOfProfileAtIndex(i), username_utf16)) {
       *error_message = l10n_util::GetStringUTF16(
           IDS_SYNC_USER_NAME_IN_USE_ERROR);
       return false;
     }
   }
 
   return true;
 }