Adds UMA metrics for renderer uptime

chrome/browser/metrics/chrome_metrics_service_client.cc

Index: chrome/browser/metrics/chrome_metrics_service_client.cc
diff --git a/chrome/browser/metrics/chrome_metrics_service_client.cc b/chrome/browser/metrics/chrome_metrics_service_client.cc
index f63623ceabc2e6003797658ef741915181f17258..05ad781cec9b365b4b6f5eed7e0883c4f3ddba24 100644
--- a/chrome/browser/metrics/chrome_metrics_service_client.cc
+++ b/chrome/browser/metrics/chrome_metrics_service_client.cc
@@ -37,6 +37,7 @@
 #include "chrome/browser/metrics/https_engagement_metrics_provider.h"
 #include "chrome/browser/metrics/metrics_reporting_state.h"
 #include "chrome/browser/metrics/network_quality_estimator_provider_impl.h"
+#include "chrome/browser/metrics/renderer_uptime_metrics_provider.h"
 #include "chrome/browser/metrics/sampling_metrics_provider.h"
 #include "chrome/browser/metrics/subprocess_metrics_provider.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ -608,6 +609,10 @@ void ChromeMetricsServiceClient::RegisterMetricsServiceProviders() {
 
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
+          new RendererUptimeMetricsProvider));
+
+  metrics_service_->RegisterMetricsProvider(
+      std::unique_ptr<metrics::MetricsProvider>(
           new metrics::GPUMetricsProvider));
 
   metrics_service_->RegisterMetricsProvider(