Refactor HashedExtensionMetrics into ExtensionsMetricsProvider.

chrome/browser/metrics/metrics_services_manager.cc

 // 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.
 
 #include "chrome/browser/metrics/metrics_services_manager.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
+#include "chrome/browser/metrics/extensions_metrics_provider.h"
 #include "chrome/browser/metrics/metrics_service.h"
 #include "chrome/browser/metrics/metrics_state_manager.h"
 #include "chrome/browser/metrics/variations/variations_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "components/rappor/rappor_service.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #endif
 
 MetricsServicesManager::MetricsServicesManager(PrefService* local_state)
     : local_state_(local_state) {
   DCHECK(local_state);
 }
 
 MetricsServicesManager::~MetricsServicesManager() {
 }
 
 MetricsService* MetricsServicesManager::GetMetricsService() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!metrics_service_) {
     metrics_service_.reset(
         new MetricsService(GetMetricsStateManager(), &metrics_service_client_));
     metrics_service_client_.set_service(metrics_service_.get());
+    metrics_service_->RegisterMetricsProvider(
+        scoped_ptr<metrics::MetricsProvider>(
+            new ExtensionsMetricsProvider(GetMetricsStateManager())));
   }
   return metrics_service_.get();
 }
 
 rappor::RapporService* MetricsServicesManager::GetRapporService() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!rappor_service_)
     rappor_service_.reset(new rappor::RapporService);
   return rappor_service_.get();
 }
@@ skipping 33 matching lines @@
 #if defined(GOOGLE_CHROME_BUILD)
 #if defined(OS_CHROMEOS)
   chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
                                             &enabled);
 #else
   enabled = local_state_->GetBoolean(prefs::kMetricsReportingEnabled);
 #endif  // #if defined(OS_CHROMEOS)
 #endif  // defined(GOOGLE_CHROME_BUILD)
   return enabled;
 }