Revert of Track how many pages trigger fallback strategies in GC

src/heap/mark-compact.cc

Index: src/heap/mark-compact.cc
diff --git a/src/heap/mark-compact.cc b/src/heap/mark-compact.cc
index d4edcf153c4f9199ce9a50e135ce6d22cd8802d2..de381aab356657374f1e62f083173045d949ded0 100644
--- a/src/heap/mark-compact.cc
+++ b/src/heap/mark-compact.cc
@@ -2032,7 +2032,6 @@
 // overflowed objects in the heap so the overflow flag on the markings stack
 // is cleared.
 void MarkCompactCollector::RefillMarkingDeque() {
-  isolate()->CountUsage(v8::Isolate::UseCounterFeature::kMarkDequeOverflow);
   DCHECK(marking_deque_.overflowed());
 
   DiscoverGreyObjectsInNewSpace(heap(), &marking_deque_);
@@ -4509,30 +4508,6 @@
 }
 
 
-void MarkCompactCollector::EvictEvacuationCandidate(Page* page) {
-  if (FLAG_trace_fragmentation) {
-    PrintF("Page %p is too popular. Disabling evacuation.\n",
-           reinterpret_cast<void*>(page));
-  }
-
-  isolate()->CountUsage(v8::Isolate::UseCounterFeature::kSlotsBufferOverflow);
-
-  // TODO(gc) If all evacuation candidates are too popular we
-  // should stop slots recording entirely.
-  page->ClearEvacuationCandidate();
-
-  // We were not collecting slots on this page that point
-  // to other evacuation candidates thus we have to
-  // rescan the page after evacuation to discover and update all
-  // pointers to evacuated objects.
-  if (page->owner()->identity() == OLD_DATA_SPACE) {
-    evacuation_candidates_.RemoveElement(page);
-  } else {
-    page->SetFlag(Page::RESCAN_ON_EVACUATION);
-  }
-}
-
-
 void MarkCompactCollector::RecordCodeEntrySlot(Address slot, Code* target) {
   Page* target_page = Page::FromAddress(reinterpret_cast<Address>(target));
   if (target_page->IsEvacuationCandidate() &&