Revert of [heap] New heuristics for starting of incremental marking.

src/heap/heap-inl.h

Index: src/heap/heap-inl.h
diff --git a/src/heap/heap-inl.h b/src/heap/heap-inl.h
index 4ec176b51df40f25a804d541769fb06eebb78a39..b5d785ff8deecce4ecfd0872f6312f29abd2744b 100644
--- a/src/heap/heap-inl.h
+++ b/src/heap/heap-inl.h
@@ -167,6 +167,18 @@
 
 Address* Heap::OldSpaceAllocationLimitAddress() {
   return old_space_->allocation_limit_address();
+}
+
+bool Heap::HeapIsFullEnoughToStartIncrementalMarking(intptr_t limit) {
+  if (FLAG_stress_compaction && (gc_count_ & 1) != 0) return true;
+
+  intptr_t adjusted_allocation_limit = limit - new_space_->Capacity();
+
+  if (PromotedTotalSize() >= adjusted_allocation_limit) return true;
+
+  if (HighMemoryPressure()) return true;
+
+  return false;
 }
 
 void Heap::UpdateNewSpaceAllocationCounter() {
@@ -478,6 +490,13 @@
 
 bool Heap::InOldSpaceSlow(Address address) {
   return old_space_->ContainsSlow(address);
+}
+
+bool Heap::OldGenerationAllocationLimitReached() {
+  if (!incremental_marking()->IsStopped() && !ShouldOptimizeForMemoryUsage()) {
+    return false;
+  }
+  return OldGenerationSpaceAvailable() < 0;
 }
 
 template <PromotionMode promotion_mode>