Add memory and CPU histogram for OOPIF

chrome/browser/performance_monitor/process_metrics_history.cc

Index: chrome/browser/performance_monitor/process_metrics_history.cc
diff --git a/chrome/browser/performance_monitor/process_metrics_history.cc b/chrome/browser/performance_monitor/process_metrics_history.cc
index 591d3738a2cbcd8bc1abb30cf0ffe259ec6da324..bc44ed9c26c3983b6f214afcbb1e8b52ef030dd4 100644
--- a/chrome/browser/performance_monitor/process_metrics_history.cc
+++ b/chrome/browser/performance_monitor/process_metrics_history.cc
@@ -107,9 +107,17 @@ void ProcessMetricsHistory::RunPerformanceTriggers() {
       UMA_HISTOGRAM_CUSTOM_COUNTS(
           "PerformanceMonitor.AverageCPU.RendererProcess", cpu_usage_,
           kHistogramMin, kHistogramMax, kHistogramBucketCount);
+      if (process_data_.contains_oopif) {
+        UMA_HISTOGRAM_CUSTOM_COUNTS("SiteIsolation.Oopif.AverageCPU",
+                                    cpu_usage_, kHistogramMin, kHistogramMax,
+                                    kHistogramBucketCount);
+      }
       if (cpu_usage_ > kHighCPUUtilizationThreshold) {
         UMA_HISTOGRAM_BOOLEAN("PerformanceMonitor.HighCPU.RendererProcess",
                               true);
+        if (process_data_.contains_oopif) {
+          UMA_HISTOGRAM_BOOLEAN("SiteIsolation.Oopif.HighCPU", true);
+        }
       }
       break;
     case content::PROCESS_TYPE_GPU: