evict larger entries first

net/disk_cache/simple/simple_experiment.h

 // Copyright 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_DISK_CACHE_SIMPLE_SIMPLE_EXPERIMENT_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_EXPERIMENT_H_
 
 #include <stdint.h>
 
 #include "base/feature_list.h"
 #include "net/base/cache_type.h"
 #include "net/base/net_export.h"
 
 namespace disk_cache {
 
 NET_EXPORT_PRIVATE extern const base::Feature kSimpleSizeExperiment;
+NET_EXPORT_PRIVATE extern const base::Feature
+    kSimpleCacheEvictionWithSizeExperiment;
 NET_EXPORT_PRIVATE extern const char kSizeMultiplierParam[];
+NET_EXPORT_PRIVATE extern const char kSizeEvictionParam[];
 
 // This lists the experiment groups for SimpleCache. Only add new groups at
 // the end of the list, and always increase the number.
 enum class SimpleExperimentType : uint32_t {
   NONE = 0,
   SIZE = 1,
+
+  // param = 0 -> control group
+  // param = 1 -> experiment group
+  EVICT_WITH_SIZE = 2,
 };
 
 struct NET_EXPORT_PRIVATE SimpleExperiment {
   SimpleExperimentType type = SimpleExperimentType::NONE;
   uint32_t param = 0;
 };
 
 NET_EXPORT_PRIVATE SimpleExperiment
 GetSimpleExperiment(net::CacheType cache_type);
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_EXPERIMENT_H_