Adding parse UMA and pingback metrics

chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc

Index: chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc
diff --git a/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc b/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc
index ab6c9ddf463f242d3582aecb5bd1fdd088f2253e..c1450227c741c0390498a9c83016db06cf5ca89d 100644
--- a/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc
+++ b/chrome/browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc
@@ -131,20 +131,23 @@ class DataReductionProxyMetricsObserverTest
 
   void ResetTest() {
     // Reset to the default testing state. Does not reset histogram state.
     timing_.navigation_start = base::Time::FromDoubleT(1);
     timing_.response_start = base::TimeDelta::FromSeconds(2);
     timing_.parse_start = base::TimeDelta::FromSeconds(3);
     timing_.first_contentful_paint = base::TimeDelta::FromSeconds(4);
     timing_.first_image_paint = base::TimeDelta::FromSeconds(5);
     timing_.first_text_paint = base::TimeDelta::FromSeconds(6);
     timing_.load_event_start = base::TimeDelta::FromSeconds(7);
+    timing_.parse_stop = base::TimeDelta::FromSeconds(4);
+    timing_.parse_blocked_on_script_load_duration =
+        base::TimeDelta::FromSeconds(1);
     PopulateRequiredTimingFields(&timing_);
   }
 
   void RunTest(bool data_reduction_proxy_used, bool is_using_lofi) {
     data_reduction_proxy_used_ = data_reduction_proxy_used;
     is_using_lofi_ = is_using_lofi;
     NavigateAndCommit(GURL(kDefaultTestUrl));
     SimulateTimingUpdate(timing_);
     pingback_client_->Reset();
 
@@ -190,20 +193,26 @@ class DataReductionProxyMetricsObserverTest
     ValidateHistogramsForSuffix(internal::kHistogramFirstContentfulPaintSuffix,
                                 timing_.first_contentful_paint);
     ValidateHistogramsForSuffix(internal::kHistogramFirstImagePaintSuffix,
                                 timing_.first_image_paint);
     ValidateHistogramsForSuffix(internal::kHistogramFirstPaintSuffix,
                                 timing_.first_paint);
     ValidateHistogramsForSuffix(internal::kHistogramFirstTextPaintSuffix,
                                 timing_.first_text_paint);
     ValidateHistogramsForSuffix(internal::kHistogramParseStartSuffix,
                                 timing_.parse_start);
+    ValidateHistogramsForSuffix(
+        internal::kHistogramParseBlockedOnScriptLoadSuffix,
+        timing_.parse_blocked_on_script_load_duration);
+    ValidateHistogramsForSuffix(
+        internal::kHistogramParseDurationSuffix,
+        timing_.parse_stop.value() - timing_.parse_start.value());
   }
 
   void ValidateHistogramsForSuffix(
       const std::string& histogram_suffix,
       const base::Optional<base::TimeDelta>& event) {
     histogram_tester().ExpectTotalCount(
         std::string(internal::kHistogramDataReductionProxyPrefix)
             .append(histogram_suffix),
         data_reduction_proxy_used_ ? 1 : 0);
     histogram_tester().ExpectTotalCount(