Move *keychain_mac* files to crypto/

chrome/browser/password_manager/encryptor_mac.mm

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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/password_manager/encryptor.h"
 
 #include <CommonCrypto/CommonCryptor.h>  // for kCCBlockSizeAES128
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/password_manager/encryptor_password_mac.h"
 #include "crypto/encryptor.h"
+#include "crypto/keychain_mac.h"
 #include "crypto/symmetric_key.h"
-#include "chrome/browser/password_manager/encryptor_password_mac.h"
-#include "chrome/browser/keychain_mac.h"
+
+using crypto::MacKeychain;
 
 namespace {
 
 // Salt for Symmetric key derivation.
 const char kSalt[] = "saltysalt";
 
 // Key size required for 128 bit AES.
 const size_t kDerivedKeySizeInBits = 128;
 
 // Constant for Symmetic key derivation.
@@ skipping 113 matching lines @@
   if (!encryptor.Decrypt(raw_ciphertext, plaintext))
     return false;
 
   return true;
 }
 
 void Encryptor::UseMockKeychain(bool use_mock) {
   use_mock_keychain = use_mock;
 }