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

crypto/secure_hash_default.cc

Index: crypto/secure_hash_default.cc
===================================================================
--- crypto/secure_hash_default.cc	(revision 79901)
+++ crypto/secure_hash_default.cc	(working copy)
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/crypto/secure_hash.h"
+#include "crypto/secure_hash.h"
 
 #include "base/logging.h"
-#include "base/third_party/nss/blapi.h"
-#include "base/third_party/nss/sha256.h"
+#include "crypto/third_party/nss/blapi.h"
+#include "crypto/third_party/nss/sha256.h"
 
-namespace base {
+namespace crypto {
 
 namespace {
 
@@ -46,4 +46,4 @@
   }
 }
 
-}  // namespace base
+}  // namespace crypto