Add HpackDecoderTables, static and dynamic tables for decoding HPACK.

net/http2/tools/random_util.h

Index: net/http2/tools/random_util.h
diff --git a/net/http2/tools/random_util.h b/net/http2/tools/random_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..b0ed03e3b3dfc214dab0ea2898c6b02cee366995
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+++ b/net/http2/tools/random_util.h
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+// Copyright 2016 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 NET_HTTP2_TOOLS_RANDOM_UTIL_H_
+#define NET_HTTP2_TOOLS_RANDOM_UTIL_H_
+
+#include <stddef.h>
+
+#include <string>
+
+#include "base/strings/string_piece.h"
+#include "net/base/net_export.h"
+
+namespace net {
+namespace test {
+
+class RandomBase;
+
+// Returns a random string of length |len|, each character drawn uniformly and
+// independently fom |alphabet|.
+std::string NET_EXPORT_PRIVATE RandomString(RandomBase* rng,
+                                            int len,
+                                            base::StringPiece alphabet);
+
+// Returns a random integer in the range [lo, hi).
+size_t NET_EXPORT_PRIVATE GenerateUniformInRange(size_t lo,
+                                                 size_t hi,
+                                                 RandomBase* rng);
+
+// Generate a string with the allowed character set for HTTP/2 / HPACK header
+// names.
+std::string NET_EXPORT_PRIVATE GenerateHttp2HeaderName(size_t len,
+                                                       RandomBase* rng);
+
+// Generate a string with the web-safe string character set of specified len.
+std::string NET_EXPORT_PRIVATE GenerateWebSafeString(size_t len,
+                                                     RandomBase* rng);
+
+// Generate a string with the web-safe string character set of length [lo, hi).
+std::string NET_EXPORT_PRIVATE GenerateWebSafeString(size_t lo,
+                                                     size_t hi,
+                                                     RandomBase* rng);
+
+}  // namespace test
+}  // namespace net
+
+#endif  // NET_HTTP2_TOOLS_RANDOM_UTIL_H_