Split net/spdy into core and chromium subdirectories.

net/spdy/spdy_header_indexing.h

-// Copyright (c) 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_SPDY_SPDY_HEADER_INDEXING_H_
-#define NET_SPDY_SPDY_HEADER_INDEXING_H_
-
-#include <stdint.h>
-#include <memory>
-#include <unordered_set>
-#include <utility>
-
-#include "net/base/net_export.h"
-#include "net/spdy/platform/api/spdy_string.h"
-#include "net/spdy/platform/api/spdy_string_piece.h"
-
-namespace net {
-
-namespace test {
-class HeaderIndexingPeer;
-}
-
-NET_EXPORT_PRIVATE extern int32_t FLAGS_gfe_spdy_indexing_set_bound;
-NET_EXPORT_PRIVATE extern int32_t FLAGS_gfe_spdy_tracking_set_bound;
-
-// Maintain two headers sets: Indexing set and tracking
-// set. Call ShouldIndex() for each header to decide if to index it. If for some
-// connections, we decide to index all headers, we may still want to call
-// UpdateSets to log the headers into both sets.
-class NET_EXPORT HeaderIndexing {
- public:
-  using HeaderSet = std::unordered_set<SpdyString>;
-
-  HeaderIndexing();
-  ~HeaderIndexing();
-
-  void CreateInitIndexingHeaders();
-
-  // Decide if a header should be indexed. We only use |header|. Add |value| to
-  // be consistent with HPACK indexing policy interface.
-  bool ShouldIndex(SpdyStringPiece header, SpdyStringPiece value);
-
-  // Not to make the indexing decision but to update sets.
-  void UpdateSets(SpdyStringPiece header, SpdyStringPiece value) {
-    update_only_header_count_++;
-    ShouldIndex(header, value);
-  }
-
-  int64_t total_header_count() { return total_header_count_; }
-  int64_t update_only_header_count() { return update_only_header_count_; }
-  int64_t missed_headers_in_indexing() { return missed_header_in_indexing_; }
-  int64_t missed_headers_in_tracking() { return missed_header_in_tracking_; }
-
- private:
-  friend class test::HeaderIndexingPeer;
-  void TryInsertHeader(SpdyString&& header, HeaderSet* set, size_t bound);
-  // Headers to index.
-  HeaderSet indexing_set_;
-  // Headers seen so far.
-  HeaderSet tracking_set_;
-  const size_t indexing_set_bound_;
-  const size_t tracking_set_bound_;
-  int64_t total_header_count_ = 0;
-  int64_t update_only_header_count_ = 0;
-  int64_t missed_header_in_indexing_ = 0;
-  int64_t missed_header_in_tracking_ = 0;
-};
-
-}  // namespace net
-
-#endif  // NET_SPDY_SPDY_HEADER_INDEXING_H_