Create PluginMetricsProvider class.

chrome/browser/metrics/chrome_stability_metrics_provider.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/chrome_stability_metrics_provider.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 61 matching lines @@
   registrar_.Add(this,
                  content::NOTIFICATION_RENDER_WIDGET_HOST_HANG,
                  content::NotificationService::AllSources());
 }
 
 void ChromeStabilityMetricsProvider::OnRecordingDisabled() {
   registrar_.RemoveAll();
 }
 
 void ChromeStabilityMetricsProvider::ProvideStabilityMetrics(
-    metrics::SystemProfileProto_Stability* stability_proto) {
+    metrics::SystemProfileProto* system_profile_proto) {
   PrefService* pref = g_browser_process->local_state();
+  metrics::SystemProfileProto_Stability* stability_proto =
+      system_profile_proto->mutable_stability();
 
   int count = pref->GetInteger(prefs::kStabilityPageLoadCount);
   if (count) {
     stability_proto->set_page_load_count(count);
     pref->SetInteger(prefs::kStabilityPageLoadCount, 0);
   }
 
   count = pref->GetInteger(prefs::kStabilityRendererCrashCount);
   if (count) {
     stability_proto->set_renderer_crash_count(count);
@@ skipping 85 matching lines @@
                              was_extension_process ? 2 : 1);
   } else if (status == base::TERMINATION_STATUS_STILL_RUNNING) {
     UMA_HISTOGRAM_PERCENTAGE("BrowserRenderProcessHost.DisconnectedAlive",
                              was_extension_process ? 2 : 1);
   }
 }
 
 void ChromeStabilityMetricsProvider::LogRendererHang() {
   IncrementPrefValue(prefs::kStabilityRendererHangCount);
 }