Move *keychain_mac* files to crypto/

crypto/keychain_mac.h

Index: crypto/keychain_mac.h
diff --git a/chrome/browser/keychain_mac.h b/crypto/keychain_mac.h
similarity index 94%
rename from chrome/browser/keychain_mac.h
rename to crypto/keychain_mac.h
index f3c98e08dadfcc0836c032b26c8e3ed491b5c5e3..f39e6aded328bf77dcf256a22d0bf570e72191f3 100644
--- a/chrome/browser/keychain_mac.h
+++ b/crypto/keychain_mac.h
@@ -1,15 +1,17 @@
-// Copyright (c) 2009 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.
 
-#ifndef CHROME_BROWSER_KEYCHAIN_MAC_H_
-#define CHROME_BROWSER_KEYCHAIN_MAC_H_
+#ifndef CRYPTO_KEYCHAIN_MAC_H_
+#define CRYPTO_KEYCHAIN_MAC_H_
 #pragma once
 
 #include <Security/Security.h>
 
 #include "base/basictypes.h"
 
+namespace crypto {
+
 // Wraps the KeychainServices API in a very thin layer, to allow it to be
 // mocked out for testing.
 
@@ -87,4 +89,6 @@ class MacKeychain {
   DISALLOW_COPY_AND_ASSIGN(MacKeychain);
 };
 
-#endif  // CHROME_BROWSER_KEYCHAIN_MAC_H_
+}  // namespace crypto
+
+#endif  // CRYPTO_KEYCHAIN_MAC_H_