Backed out changeset 92cde451be94 (bug 1444013) for failures in tests/dom/media/tests/crashtests/1453030.html

js/public/SliceBudget.h

@@ -89,11 +89,6 @@ class JS_PUBLIC_API(SliceBudget)
     bool isTimeBudget() const { return !deadline.IsNull() && !isUnlimited(); }
     bool isUnlimited() const { return deadline == unlimitedDeadline; }
 
-    mozilla::TimeDuration toDuration() const {
-        MOZ_ASSERT(isTimeBudget());
-        return mozilla::TimeDuration::FromMilliseconds(timeBudget.budget);
-    }
-
     int describe(char* buffer, size_t maxlen) const;
 
     static void Init();

js/src/gc/GC.cpp

@@ -7886,16 +7886,6 @@ GCRuntime::gcCycle(bool nonincrementalByAPI, SliceBudget& budget,
 
     if (shouldCollectNurseryForSlice(nonincrementalByAPI, budget)) {
         minorGC(reason, gcstats::PhaseKind::EVICT_NURSERY_FOR_MAJOR_GC);
-        if (!nonincrementalByAPI && budget.isTimeBudget()) {
-            // End this slice now if nursery collection took 4/5ths of our
-            // budget and there's 5ms or less left in the budget.
-            if ((nursery().lastDuration() / budget.toDuration()) > 0.8 &&
-                (budget.toDuration() - nursery().lastDuration() <=
-                    mozilla::TimeDuration::FromMilliseconds(5)))
-            {
-                return IncrementalResult::Ok;
-            }
-        }
     }
 
     AutoGCSession session(rt, JS::HeapState::MajorCollecting);

js/src/gc/Nursery.h

@@ -581,13 +581,6 @@ class Nursery
     void maybeClearProfileDurations();
     void startProfile(ProfileKey key);
     void endProfile(ProfileKey key);
-public:
-    mozilla::TimeDuration lastDuration()
-    {
-        return profileDurations_[ProfileKey::Total];
-    }
-
-private:
     static void printProfileDurations(const ProfileDurations& times);
 
     friend class TenuringTracer;