Revert of Reduce plugin_metrics_provider_ usage in MetricsService

chrome/browser/browser_process.h

 // 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.
 
 // This interface is for managing the global services of the application. Each
 // service is lazily created when requested the first time. The service getters
 // will return NULL if the service is not available, so callers must check for
 // this condition.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_H_
@@ skipping 11 matching lines @@
 class CRLSetFetcher;
 class DownloadRequestLimiter;
 class DownloadStatusUpdater;
 class GLStringManager;
 class GpuModeManager;
 class IconManager;
 class IntranetRedirectDetector;
 class IOThread;
 class MediaFileSystemRegistry;
 class MetricsService;
-class MetricsServicesManager;
 class NetworkTimeTracker;
 class NotificationUIManager;
 class PrefRegistrySimple;
 class PrefService;
 class Profile;
 class ProfileManager;
 class SafeBrowsingService;
 class StatusTray;
 class WatchDogThread;
 #if defined(ENABLE_WEBRTC)
@@ skipping 53 matching lines @@
 
   // Called when the ResourceDispatcherHost object is created by content.
   virtual void ResourceDispatcherHostCreated() = 0;
 
   // Invoked when the user is logging out/shutting down. When logging off we may
   // not have enough time to do a normal shutdown. This method is invoked prior
   // to normal shutdown and saves any state that must be saved before we are
   // continue shutdown.
   virtual void EndSession() = 0;
 
-  // Gets the manager for the various metrics-related services, constructing it
-  // if necessary.
-  virtual MetricsServicesManager* GetMetricsServicesManager() = 0;
-
   // Services: any of these getters may return NULL
   virtual MetricsService* metrics_service() = 0;
   virtual rappor::RapporService* rappor_service() = 0;
   virtual ProfileManager* profile_manager() = 0;
   virtual PrefService* local_state() = 0;
   virtual net::URLRequestContextGetter* system_request_context() = 0;
   virtual chrome_variations::VariationsService* variations_service() = 0;
 
   virtual BrowserProcessPlatformPart* platform_part() = 0;
 
@@ skipping 107 matching lines @@
 
   virtual NetworkTimeTracker* network_time_tracker() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserProcess);
 };
 
 extern BrowserProcess* g_browser_process;
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_H_