Remove ResourceFetcher::DeadResourceStatsRecorder

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

Index: third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
diff --git a/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h b/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
index 1dcd6d738564f25f4500c2c56f525a5d5cb77d34..bb1d1bd300a560d89aeb7eb1c0188344de3dd5b7 100644
--- a/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
+++ b/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h
@@ -245,23 +245,6 @@ class PLATFORM_EXPORT ResourceFetcher
   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