Make DownloadHistory observe manager, items

content/browser/download/download_stats.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/download/download_stats.h"
 
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "content/browser/download/download_resource_handler.h"
 #include "content/public/browser/download_interrupt_reasons.h"
@@ skipping 260 matching lines @@
 void RecordOpen(const base::Time& end, bool first) {
   if (!end.is_null()) {
     UMA_HISTOGRAM_LONG_TIMES("Download.OpenTime", (base::Time::Now() - end));
     if (first) {
       UMA_HISTOGRAM_LONG_TIMES("Download.FirstOpenTime",
                               (base::Time::Now() - end));
     }
   }
 }
 
-void RecordHistorySize(int size) {
-  UMA_HISTOGRAM_CUSTOM_COUNTS("Download.HistorySize2",
-                              size,
-                              0/*min*/,
-                              (1 << 23)/*max*/,
-                              (1 << 7)/*num_buckets*/);
-}
-
 void RecordClearAllSize(int size) {
   UMA_HISTOGRAM_CUSTOM_COUNTS("Download.ClearAllSize",
                               size,
                               0/*min*/,
                               (1 << 10)/*max*/,
                               32/*num_buckets*/);
 }
 
 void RecordOpensOutstanding(int size) {
   UMA_HISTOGRAM_CUSTOM_COUNTS("Download.OpensOutstanding",
@@ skipping 41 matching lines @@
                            disk_write_time_ms * 100 / elapsed_time_ms);
 }
 
 void RecordSavePackageEvent(SavePackageEvent event) {
   UMA_HISTOGRAM_ENUMERATION("Download.SavePackage",
                             event,
                             SAVE_PACKAGE_LAST_ENTRY);
 }
 
 }  // namespace download_stats