Remove HpackHuffmanAggregator.

net/spdy/hpack_huffman_aggregator.h

-// 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.
-
-#include <list>
-#include <vector>
-
-#include "base/macros.h"
-#include "net/base/net_export.h"
-#include "net/spdy/spdy_header_block.h"
-#include "net/spdy/spdy_protocol.h"
-#include "net/spdy/spdy_session_key.h"
-
-namespace net {
-
-class HpackEncoder;
-class HttpRequestHeaders;
-struct HttpRequestInfo;
-class HttpResponseHeaders;
-class ProxyServer;
-
-namespace test {
-class HpackHuffmanAggregatorPeer;
-}  // namespace test
-
-class NET_EXPORT_PRIVATE HpackHuffmanAggregator {
- public:
-  friend class test::HpackHuffmanAggregatorPeer;
-
-  HpackHuffmanAggregator();
-  ~HpackHuffmanAggregator();
-
-  // Encodes the request and response headers of the transaction with an
-  // HpackEncoder keyed on the transaction's SpdySessionKey. Literal headers
-  // emitted by that encoder are aggregated into internal character counts,
-  // which are periodically published to a UMA histogram.
-  void AggregateTransactionCharacterCounts(
-    const HttpRequestInfo& request,
-    const HttpRequestHeaders& request_headers,
-    const ProxyServer& proxy,
-    const HttpResponseHeaders& response_headers);
-
-  // Returns whether the aggregator is enabled for the session by a field trial.
-  static bool UseAggregator();
-
- private:
-  typedef std::pair<SpdySessionKey, HpackEncoder*> OriginEncoder;
-  typedef std::list<OriginEncoder> OriginEncoders;
-
-  // Returns true if the request is considered cross-origin,
-  // and should not be aggregated.
-  static bool IsCrossOrigin(const HttpRequestInfo& request);
-
-  // Converts |headers| into SPDY headers block |headers_out|.
-  static void CreateSpdyHeadersFromHttpResponse(
-      const HttpResponseHeaders& headers,
-      SpdyHeaderBlock* headers_out);
-
-  // Creates or returns an encoder for the origin key.
-  HpackEncoder* ObtainEncoder(const SpdySessionKey& key);
-
-  // Publishes aggregated counts to a UMA histogram.
-  void PublishCounts();
-
-  std::vector<size_t> counts_;
-  size_t total_counts_;
-
-  OriginEncoders encoders_;
-  size_t max_encoders_;
-
-  DISALLOW_COPY_AND_ASSIGN(HpackHuffmanAggregator);
-};
-
-}  // namespace net