Remove unused DataReductionProxy code

components/data_reduction_proxy/core/browser/data_reduction_proxy_config_retrieval_params.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_config_retrieval_params.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_retrieval_params.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_retrieval_params.h
deleted file mode 100644
index 5e09b277c8d796d0899e3872970b5f92df960606..0000000000000000000000000000000000000000
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_config_retrieval_params.h
+++ /dev/null
@@ -1,155 +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_CONFIG_RETRIEVAL_PARAMS_H_
-#define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_CONFIG_RETRIEVAL_PARAMS_H_
-
-#include <stdint.h>
-
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-
-class PrefService;
-
-namespace base {
-class HistogramBase;
-}
-
-namespace data_reduction_proxy {
-
-// The number of config fetch variations supported. Must match the number of
-// suffixes in histograms.xml.
-extern const int kConfigFetchGroups;
-
-// The name of the trial group for measuring lost bytes during fetching the
-// configuration.
-extern const char kConfigFetchTrialGroup[];
-
-// The config retrieval round trip time is calculated as:
-// (previous base) * (multiplier) + increment.
-// Multipler is >= 1. Increment is >= 0.
-// The name of the param prefix for determining the base round trip time in
-// milliseconds for simulating a configuration fetch.
-extern const char kConfigRoundtripMillisecondsBaseParam[];
-
-// The name of the param prefix for determining the base round trip time in
-// milliseconds for simulating a configuration fetch.
-extern const char kConfigRoundtripMultiplierParam[];
-
-// The name of the param prefix for determining the base round trip time in
-// milliseconds for simulating a configuration fetch.
-extern const char kConfigRoundtripMillisecondsIncrementParam[];
-
-// The name of the param for determining the expiration interval of the
-// configuration in seconds.
-extern const char kConfigExpirationSecondsParam[];
-
-// The name of the param for determining if the config should be considered
-// stale on startup (regardless of whether it is stale or not).
-extern const char kConfigAlwaysStaleParam[];
-
-// The number of seconds by which the expiration interval exceeds the refresh
-// interval so that we maintain a valid configuration.
-extern const int kConfigFetchBufferSeconds;
-
-// Parameters for setting up an experiment to measure potentially uncompressed
-// bytes during the retrieval of the Data Reduction Proxy configuration.
-class DataReductionProxyConfigRetrievalParams {
- public:
-  enum ConfigState {
-    VALID = 0,
-    RETRIEVING = 1,
-    EXPIRED = 2,
-  };
-
-  // A variation of the simulated configuration retrieval time, permitting the
-  // experiment to measure multiple values.
-  class Variation {
-   public:
-    Variation(int index, const base::Time& simulated_config_retrieved);
-
-    // Returns the current state of the Data Reduction Proxy configuration.
-    // Virtual for testing.
-    virtual ConfigState GetState(const base::Time& request_time,
-                                 const base::Time& config_expiration) const;
-
-    // Records content length statistics if potentially uncompressed bytes have
-    // been detected for this variation.
-    void RecordStats(int64_t received_content_length,
-                     int64_t original_content_length) const;
-
-    // Visible for testing.
-    const base::Time& simulated_config_retrieved() const {
-      return simulated_config_retrieved_;
-    }
-
-   private:
-    // The time at which the simulated Data Reduction Proxy configuration is
-    // considered to have been received.
-    base::Time simulated_config_retrieved_;
-
-    // Histograms for recording stats.
-    base::HistogramBase* lost_bytes_ocl_;
-    base::HistogramBase* lost_bytes_rcl_;
-    base::HistogramBase* lost_bytes_diff_;
-  };
-
-  static scoped_ptr<DataReductionProxyConfigRetrievalParams> Create(
-      PrefService* pref_service);
-
-  virtual ~DataReductionProxyConfigRetrievalParams();
-
-  // Records content length statistics against any variations for which
-  // potentially uncompressed bytes have been detected.
-  void RecordStats(const base::Time& request_time,
-                   int64_t received_content_length,
-                   int64_t original_content_length) const;
-
-  // Simulates retrieving a new configuration.
-  void RefreshConfig();
-
-  bool loaded_expired_config() const { return loaded_expired_config_; }
-
-  // Returns the expiration time of the current configuration.
-  const base::Time& config_expiration() const { return config_expiration_; }
-
-  // Returns how often the configuration should be retrieved.
-  const base::TimeDelta& refresh_interval() const {
-    return config_refresh_interval_;
-  }
-
-  // Visible for testing.
-  const std::vector<Variation>& variations() const { return variations_; }
-
- private:
-  DataReductionProxyConfigRetrievalParams(
-      bool loaded_expired_config,
-      const std::vector<Variation>& variations,
-      const base::Time& config_expiration,
-      const base::TimeDelta& config_refresh_interval);
-
-  // Indicates that the Data Reduction Proxy configuration when loaded has
-  // expired.
-  bool loaded_expired_config_;
-
-  // The time at which the simulated Data Reduction Proxy configuration
-  // expires.
-  base::Time config_expiration_;
-
-  // The duration for which a Data Reduction Proxy configuration is considered
-  // valid.
-  base::TimeDelta config_expiration_interval_;
-
-  // The duration after which a simulated retrieval of a new Data Reduction
-  // Proxy configuration should be performed.
-  base::TimeDelta config_refresh_interval_;
-
-  // The different variations on roundtrip time that can take place.
-  std::vector<Variation> variations_;
-};
-
-}  // namespace data_reduction_proxy
-#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_CONFIG_RETRIEVAL_PARAMS_H_