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

crypto/hmac_openssl.cc

Index: crypto/hmac_openssl.cc
===================================================================
--- crypto/hmac_openssl.cc	(revision 79901)
+++ crypto/hmac_openssl.cc	(working copy)
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/hmac.h"
+#include "crypto/hmac.h"
 
 #include <openssl/hmac.h>
 
@@ -11,10 +11,10 @@
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/openssl_util.h"
 #include "base/stl_util-inl.h"
+#include "crypto/openssl_util.h"
 
-namespace base {
+namespace crypto {
 
 struct HMACPlatformData {
   std::vector<unsigned char> key;
@@ -54,4 +54,4 @@
                 result.safe_buffer(), NULL);
 }
 
-}  // namespace base
+}  // namespace crypto