Improve tracking of user initiated page loads.

chrome/browser/page_load_metrics/page_load_tracker.h

Index: chrome/browser/page_load_metrics/page_load_tracker.h
diff --git a/chrome/browser/page_load_metrics/page_load_tracker.h b/chrome/browser/page_load_metrics/page_load_tracker.h
index 3d082f8e03afa7c0d96e3f9436edf8d6057e0160..e9dc24267f351b03e4eac99f2d7face8e8357fb9 100644
--- a/chrome/browser/page_load_metrics/page_load_tracker.h
+++ b/chrome/browser/page_load_metrics/page_load_tracker.h
@@ -247,11 +247,6 @@ class PageLoadTracker {
   // be the first abort action the user performed.
   UserAbortType abort_type_;
 
-  // This boolean is only an approximation. As the aborts pipeline is updated,
-  // more abort types will have this set to true. Currently, this is only set
-  // for navigations aborting navigations.
-  bool abort_user_initiated_;
-
   base::TimeTicks abort_time_;
 
   // We record separate metrics for events that occur after a background,
@@ -274,7 +269,7 @@ class PageLoadTracker {
 
   // This is derived from the user gesture bit in the renderer. For browser
   // initiated navigations this will always be true.
-  bool user_gesture_;
+  bool user_initiated_;
 
   // This is a subtle member. If a provisional load A gets aborted by
   // provisional load B, which gets aborted by C that eventually commits, then