Move crypto files out of base, to a top level directory.

crypto/signature_creator_mac.cc

Index: crypto/signature_creator_mac.cc
===================================================================
--- crypto/signature_creator_mac.cc	(revision 79901)
+++ crypto/signature_creator_mac.cc	(working copy)
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/crypto/signature_creator.h"
+#include "crypto/signature_creator.h"
 
 #include <stdlib.h>
 
-#include "base/crypto/cssm_init.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "crypto/cssm_init.h"
 
-namespace base {
+namespace crypto {
 
 // static
 SignatureCreator* SignatureCreator::Create(RSAPrivateKey* key) {
@@ -71,4 +71,4 @@
   return true;
 }
 
-}  // namespace base
+}  // namespace crypto