Remove ResourceFetcher::DeadResourceStatsRecorder

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 227 matching lines @@
       HeapHashMap<Member<Resource>, RefPtr<ResourceTimingInfo>>;
   ResourceTimingInfoMap resource_timing_info_map_;
 
   RefPtr<ResourceTimingInfo> navigation_timing_info_;
 
   Vector<RefPtr<ResourceTimingInfo>> scheduled_resource_timing_reports_;
 
   HeapHashSet<Member<ResourceLoader>> loaders_;
   HeapHashSet<Member<ResourceLoader>> non_blocking_loaders_;
 
-  // Used in hit rate histograms.
-  class DeadResourceStatsRecorder {
-    DISALLOW_NEW();
-
-   public:
-    DeadResourceStatsRecorder();
-    ~DeadResourceStatsRecorder();
-
-    void Update(RevalidationPolicy);
-
-   private:
-    int use_count_;
-    int revalidate_count_;
-    int load_count_;
-  };
-  DeadResourceStatsRecorder dead_stats_recorder_;
-
   std::unique_ptr<HashSet<String>> preloaded_urls_for_test_;
 
   // 28 bits left
   bool auto_load_images_ : 1;
   bool images_enabled_ : 1;
   bool allow_stale_resources_ : 1;
   bool image_fetched_ : 1;
 };
 
 class ResourceCacheValidationSuppressor {
@@ skipping 14 matching lines @@
   }
 
  private:
   Member<ResourceFetcher> loader_;
   bool previous_state_;
 };
 
 }  // namespace blink
 
 #endif  // ResourceFetcher_h