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

chrome/browser/metrics/chrome_metrics_service_client.h

 // 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_CHROME_METRICS_SERVICE_CLIENT_H_
 #define CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "chrome/browser/metrics/metrics_memory_details.h"
-#include "chrome/browser/metrics/network_stats_uploader.h"
 #include "components/metrics/metrics_service_client.h"
 #include "components/metrics/profiler/tracking_synchronizer_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class ChromeOSMetricsProvider;
 class DriveMetricsProvider;
 class GoogleUpdateMetricsProviderWin;
 class PluginMetricsProvider;
 class PrefRegistrySimple;
+class PrefService;
 
 #if !defined(OS_CHROMEOS) && !defined(OS_IOS)
 class SigninStatusMetricsProvider;
 #endif
 
 namespace base {
 class FilePath;
 }  // namespace base
 
 namespace metrics {
@@ skipping 96 matching lines @@
 
   // The MetricsService that |this| is a client of.
   scoped_ptr<metrics::MetricsService> metrics_service_;
 
   content::NotificationRegistrar registrar_;
 
   // On ChromeOS, holds a weak pointer to the ChromeOSMetricsProvider instance
   // that has been registered with MetricsService. On other platforms, is NULL.
   ChromeOSMetricsProvider* chromeos_metrics_provider_;
 
-  NetworkStatsUploader network_stats_uploader_;
-
   // Saved callback received from CollectFinalMetrics().
   base::Closure collect_final_metrics_done_callback_;
 
   // Indicates that collect final metrics step is running.
   bool waiting_for_collect_final_metrics_step_;
 
   // Number of async histogram fetch requests in progress.
   int num_async_histogram_fetches_in_progress_;
 
   // The ProfilerMetricsProvider instance that was registered with
@@ skipping 26 matching lines @@
   // Callback to determine whether or not a cellular network is currently being
   // used.
   base::Callback<void(bool*)> cellular_callback_;
 
   base::WeakPtrFactory<ChromeMetricsServiceClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsServiceClient);
 };
 
 #endif  // CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_