Move hash.h/cc from net to base.
Review URL: https://chromiumcodereview.appspot.com/10920026
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@154554 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: 51ddf72550374b626eb2ea3239ca13f04c8eb2b7
diff --git a/base/hash.h b/base/hash.h
new file mode 100644
index 0000000..cf8ea3a
--- /dev/null
+++ b/base/hash.h
@@ -0,0 +1,31 @@
+// 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.
+
+#ifndef BASE_HASH_H_
+#define BASE_HASH_H_
+
+#include <string>
+
+#include "base/base_export.h"
+#include "base/basictypes.h"
+
+namespace base {
+
+// From http://www.azillionmonkeys.com/qed/hash.html
+// This is the hash used on WebCore/platform/stringhash
+BASE_EXPORT uint32 SuperFastHash(const char * data, int len);
+
+inline uint32 Hash(const char* key, size_t length) {
+ return SuperFastHash(key, static_cast<int>(length));
+}
+
+inline uint32 Hash(const std::string& key) {
+ if (key.empty())
+ return 0;
+ return SuperFastHash(key.data(), static_cast<int>(key.size()));
+}
+
+} // namespace base
+
+#endif // BASE_HASH_H_