Reduce plugin_metrics_provider_ usage in MetricsService

chrome/browser/browser_process_impl.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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
@@ skipping 56 matching lines @@
   // ChromeBrowserMain based on notifications from the content
   // framework, rather than in the destructor, so that we can
   // interleave cleanup with threads being stopped.
   void StartTearDown();
   void PostDestroyThreads();
 
   // BrowserProcess implementation.
   virtual void ResourceDispatcherHostCreated() OVERRIDE;
   virtual void EndSession() OVERRIDE;
   virtual MetricsService* metrics_service() OVERRIDE;
+  virtual PluginMetricsProvider* plugin_metrics_provider() OVERRIDE;
   virtual rappor::RapporService* rappor_service() OVERRIDE;
   virtual IOThread* io_thread() OVERRIDE;
   virtual WatchDogThread* watchdog_thread() OVERRIDE;
   virtual ProfileManager* profile_manager() OVERRIDE;
   virtual PrefService* local_state() OVERRIDE;
   virtual net::URLRequestContextGetter* system_request_context() OVERRIDE;
   virtual chrome_variations::VariationsService* variations_service() OVERRIDE;
   virtual BrowserProcessPlatformPart* platform_part() OVERRIDE;
   virtual extensions::EventRouterForwarder*
         extension_event_router_forwarder() OVERRIDE;
@@ skipping 198 matching lines @@
   // Lazily initialized.
   scoped_ptr<WebRtcLogUploader> webrtc_log_uploader_;
 #endif
 
   scoped_ptr<NetworkTimeTracker> network_time_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_