Metrics for document.write script blocking

components/page_load_metrics/browser/page_load_metrics_util.h

Index: components/page_load_metrics/browser/page_load_metrics_util.h
diff --git a/components/page_load_metrics/browser/page_load_metrics_util.h b/components/page_load_metrics/browser/page_load_metrics_util.h
index 380c077d26357ae6db44339bbbdacfe9b45692b6..26c6c92f2880223734d00333af342e8e0c100e39 100644
--- a/components/page_load_metrics/browser/page_load_metrics_util.h
+++ b/components/page_load_metrics/browser/page_load_metrics_util.h
@@ -25,9 +25,17 @@ struct PageLoadTiming;
 // When a page is backgrounded, some events (e.g. paint) are delayed. Since
 // these data points can skew the mean, they should not be mixed with timing
 // events that occurred in the foreground.
-bool WasStartedInForegroundEventInForeground(base::TimeDelta event,
+bool WasStartedInForegroundEventInForeground(const base::TimeDelta& event,
                                              const PageLoadExtraInfo& info);
 
+// Returns true if:
+// - Parse started and did not complete but the entire page load duration
+// happened in the foreground.
+// - Parse completed and happened entirely in the foreground.
+bool WasParseInForeground(const base::TimeDelta& parse_start,
+                          const base::TimeDelta& parse_stop,
+                          const PageLoadExtraInfo& info);
+
 }  // namespace page_load_metrics
 
 #endif  // COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_UTIL_H_