[Clean-up] Remove NetworkStats code, which has been dead code since July 2014.

chrome/browser/metrics/network_stats_uploader.h

Index: chrome/browser/metrics/network_stats_uploader.h
diff --git a/chrome/browser/metrics/network_stats_uploader.h b/chrome/browser/metrics/network_stats_uploader.h
deleted file mode 100644
index 17656110e7a3b6327bd60c812431fa22600fed59..0000000000000000000000000000000000000000
--- a/chrome/browser/metrics/network_stats_uploader.h
+++ /dev/null
@@ -1,32 +0,0 @@
-// Copyright 2014 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 CHROME_BROWSER_METRICS_NETWORK_STATS_UPLOADER_H_
-#define CHROME_BROWSER_METRICS_NETWORK_STATS_UPLOADER_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-
-class PrefService;
-class PrefRegistrySimple;
-
-// NetworkStatsUploader implements the collection of various network stats,
-// which is done upon successful transmission of an UMA log.
-class NetworkStatsUploader {
- public:
-  NetworkStatsUploader();
-  ~NetworkStatsUploader();
-
-  // Collects and reports various network stats to external servers.
-  void CollectAndReportNetworkStats();
-
- private:
-  // The TCP/UDP echo server to collect network connectivity stats.
-  std::string network_stats_server_;
-
-  DISALLOW_COPY_AND_ASSIGN(NetworkStatsUploader);
-};
-
-#endif  // CHROME_BROWSER_METRICS_NETWORK_STATS_UPLOADER_H_