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diff --git a/net/spdy/hpack/hpack_entry.h b/net/spdy/hpack/hpack_entry.h
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+++ b/net/spdy/hpack/hpack_entry.h
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+// Copyright 2014 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_SPDY_HPACK_ENTRY_H_
+#define NET_SPDY_HPACK_ENTRY_H_
+
+#include <cstddef>
+#include <set>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/macros.h"
+#include "base/strings/string_piece.h"
+#include "net/base/net_export.h"
+
+// All section references below are to
+// http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-08
+
+namespace net {
+
+// A structure for an entry in the static table (3.3.1)
+// and the header table (3.3.2).
+class NET_EXPORT_PRIVATE HpackEntry {
+ public:
+  // The constant amount added to name().size() and value().size() to
+  // get the size of an HpackEntry as defined in 5.1.
+  static const size_t kSizeOverhead;
+
+  // Creates an entry. Preconditions:
+  // - |is_static| captures whether this entry is a member of the static
+  //   or dynamic header table.
+  // - |insertion_index| is this entry's index in the total set of entries ever
+  //   inserted into the header table (including static entries).
+  //
+  // The combination of |is_static| and |insertion_index| allows an
+  // HpackEntryTable to determine the index of an HpackEntry in O(1) time.
+  HpackEntry(base::StringPiece name,
+             base::StringPiece value,
+             bool is_static,
+             size_t insertion_index);
+
+  // Create a 'lookup' entry (only) suitable for querying a HpackEntrySet. The
+  // instance InsertionIndex() always returns 0 and IsLookup() returns true.
+  HpackEntry(base::StringPiece name, base::StringPiece value);
+
+  // Creates an entry with empty name and value. Only defined so that
+  // entries can be stored in STL containers.
+  HpackEntry();
+
+  ~HpackEntry();
+
+  const std::string& name() const { return name_; }
+  const std::string& value() const { return value_; }
+
+  // Returns whether this entry is a member of the static (as opposed to
+  // dynamic) table.
+  bool IsStatic() const { return type_ == STATIC; }
+
+  // Returns whether this entry is a lookup-only entry.
+  bool IsLookup() const { return type_ == LOOKUP; }
+
+  // Used to compute the entry's index in the header table.
+  size_t InsertionIndex() const { return insertion_index_; }
+
+  // Returns the size of an entry as defined in 5.1.
+  static size_t Size(base::StringPiece name, base::StringPiece value);
+  size_t Size() const;
+
+  std::string GetDebugString() const;
+
+ private:
+  enum EntryType {
+    LOOKUP,
+    DYNAMIC,
+    STATIC,
+  };
+
+  // TODO(jgraettinger): Reduce copies, possibly via SpdyPinnableBufferPiece.
+  std::string name_;
+  std::string value_;
+
+  // The entry's index in the total set of entries ever inserted into the header
+  // table.
+  size_t insertion_index_;
+
+  EntryType type_;
+};
+
+}  // namespace net
+
+#endif  // NET_SPDY_HPACK_ENTRY_H_