Move *keychain_mac* files to crypto/

chrome/browser/password_manager/encryptor_mac.mm

Index: chrome/browser/password_manager/encryptor_mac.mm
diff --git a/chrome/browser/password_manager/encryptor_mac.mm b/chrome/browser/password_manager/encryptor_mac.mm
index 56b048c3d205303ccdc105e37c431aacf538d8e3..00116fa1addf3d81478239c4414cfa7a455852f1 100644
--- a/chrome/browser/password_manager/encryptor_mac.mm
+++ b/chrome/browser/password_manager/encryptor_mac.mm
@@ -1,4 +1,4 @@
-// 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.
 
@@ -9,10 +9,12 @@
 #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 {