DRP metrics observer stop observing after hidden

chrome/browser/page_load_metrics/page_load_tracker.cc

Index: chrome/browser/page_load_metrics/page_load_tracker.cc
diff --git a/chrome/browser/page_load_metrics/page_load_tracker.cc b/chrome/browser/page_load_metrics/page_load_tracker.cc
index 9a5b8197d26e1ae3fa04de51a109c8e5b8978af8..4e672640c8ea38e1e8694db2ad75263a566890b9 100644
--- a/chrome/browser/page_load_metrics/page_load_tracker.cc
+++ b/chrome/browser/page_load_metrics/page_load_tracker.cc
@@ -406,22 +406,22 @@ void PageLoadTracker::WebContentsHidden() {
     background_time_ = base::TimeTicks::Now();
     ClampBrowserTimestampIfInterProcessTimeTickSkew(&background_time_);
     // Though most cases where a tab is backgrounded are user initiated, we
     // can't be certain that we were backgrounded due to a user action. For
     // example, on Android, the screen times out after a period of inactivity,
     // resulting in a non-user-initiated backgrounding.
     const bool abort_is_user_initiated = false;
     NotifyAbort(ABORT_BACKGROUND, abort_is_user_initiated, background_time_,
                 true);
   }
-
-  INVOKE_AND_PRUNE_OBSERVERS(observers_, OnHidden);
+  const PageLoadExtraInfo info = ComputePageLoadExtraInfo();
+  INVOKE_AND_PRUNE_OBSERVERS(observers_, OnHidden, timing_, info);
 }
 
 void PageLoadTracker::WebContentsShown() {
   // Only log the first time we foreground in a given page load.
   if (foreground_time_.is_null()) {
     // Make sure we either started in the background and haven't been
     // backgrounded yet, or started in the foreground and have already been
     // backgrounded.
     DCHECK_NE(started_in_foreground_, background_time_.is_null());
     foreground_time_ = base::TimeTicks::Now();