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

crypto/sha2.cc

Index: crypto/sha2.cc
===================================================================
--- crypto/sha2.cc	(revision 79901)
+++ crypto/sha2.cc	(working copy)
@@ -1,14 +1,14 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
-#include "base/sha2.h"
+#include "crypto/sha2.h"
 
 #include "base/stl_util-inl.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 {
 
 void SHA256HashString(const std::string& str, void* output, size_t len) {
   SHA256Context ctx;
@@ -26,4 +26,4 @@
   return output;
 }
 
-}  // namespace base
+}  // namespace crypto