[heap] Don't perform huge marking steps when delaying full collection.

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 5c2d5786099bff15cd894eea21f08693bd4dc0cf..1c6d9f62abd2b0466467ff538367aac48a7e2aa6 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -983,10 +983,6 @@ bool Heap::CollectGarbage(GarbageCollector collector, const char* gc_reason,
       !ShouldAbortIncrementalMarking() && !incremental_marking()->IsStopped() &&
       !incremental_marking()->should_hurry() && FLAG_incremental_marking &&
       OldGenerationAllocationLimitReached()) {
-    // Make progress in incremental marking.
-    const intptr_t kStepSizeWhenDelayedByScavenge = 1 * MB;
-    incremental_marking()->Step(kStepSizeWhenDelayedByScavenge,
-                                IncrementalMarking::NO_GC_VIA_STACK_GUARD);
     if (!incremental_marking()->IsComplete() &&
         !mark_compact_collector()->marking_deque_.IsEmpty() &&
         !FLAG_gc_global) {