Remove unused DataReductionProxy code

components/data_reduction_proxy/core/browser/data_reduction_proxy_experiments_stats.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_experiments_stats.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_experiments_stats.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_experiments_stats.h
deleted file mode 100644
index ee6fc6832cdffd86ab5bc5e93beb5ac230c864b2..0000000000000000000000000000000000000000
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_experiments_stats.h
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright 2015 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 COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_EXPERIMENTS_STATS_H_
-#define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_EXPERIMENTS_STATS_H_
-
-#include <stdint.h>
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "base/timer/timer.h"
-#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_metrics.h"
-
-namespace base {
-class Time;
-}
-
-namespace data_reduction_proxy {
-
-class DataReductionProxyConfigRetrievalParams;
-
-typedef base::Callback<void(const std::string&, int64_t)> Int64ValueSetter;
-
-// Collects statistics specific to experiments of which a client may be part.
-// Any calls into this class should be as lightweight as possible such that if
-// no experiments are being performed, there should be minimal code being
-// executed.
-// Currently supported experiments are:
-// - Measuring potentially uncompressed bytes during simulated config retrieval.
-class DataReductionProxyExperimentsStats {
- public:
-  DataReductionProxyExperimentsStats(const Int64ValueSetter& value_setter);
-  virtual ~DataReductionProxyExperimentsStats();
-
-  // Initializes |this| on the UI thread. If called, must be called prior to
-  // InitializeOnIOThread.
-  void InitializeOnUIThread(scoped_ptr<DataReductionProxyConfigRetrievalParams>
-                                config_retrieval_params);
-
-  // Initializes |this| on the IO thread.
-  void InitializeOnIOThread();
-
-  // Collect received bytes for the experiment.
-  void RecordBytes(const base::Time& request_time,
-                   DataReductionProxyRequestType request_type,
-                   int64_t received_content_length,
-                   int64_t original_content_length);
-
- private:
-  // Updates the simulated expiration of the Data Reduction Proxy configuration
-  // if |config_retrieval_| is set.
-  void UpdateSimulatedConfig();
-
-  // Allows an experiment to persist data to preferences.
-  Int64ValueSetter value_setter_;
-
-  // Enables measuring of potentially uncompressed bytes during a simulated Data
-  // Reduction Proxy configuration retrieval.
-  scoped_ptr<DataReductionProxyConfigRetrievalParams> config_retrieval_params_;
-
-  // If set, periodically updates the simulated expiration of the Data Reduction
-  // Proxy configuration.
-  base::RepeatingTimer config_refresh_time_;
-
-  // Enforce initialization order.
-  bool initialized_;
-
-  // Enforce usage on the IO thread.
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(DataReductionProxyExperimentsStats);
-};
-
-}  // namespace data_reduction_proxy
-
-#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_EXPERIMENTS_STATS_H_