Do not fire timers for finalizing objects.

Source/platform/heap/ThreadState.cpp

Index: Source/platform/heap/ThreadState.cpp
diff --git a/Source/platform/heap/ThreadState.cpp b/Source/platform/heap/ThreadState.cpp
index 0e96faec732ecedf2c6edf93aaea0b3e098e7384..fa57e7ebba437ed9c6461fa7da2d34924fda81cc 100644
--- a/Source/platform/heap/ThreadState.cpp
+++ b/Source/platform/heap/ThreadState.cpp
@@ -314,6 +314,7 @@ ThreadState::ThreadState()
     , m_sweepForbidden(false)
     , m_noAllocationCount(0)
     , m_isTerminating(false)
+    , m_lazySweepToggle(false)
     , m_shouldFlushHeapDoesNotContainCache(false)
     , m_collectionRate(1.0)
     , m_gcState(NoGCScheduled)
@@ -907,6 +908,7 @@ void ThreadState::preGC()
     makeConsistentForSweeping();
     prepareRegionTree();
     flushHeapDoesNotContainCacheIfNeeded();
+    m_lazySweepToggle = !m_lazySweepToggle;
     if (isMainThread())
         m_allocatedObjectSizeBeforeGC = Heap::allocatedObjectSize() + Heap::markedObjectSize();
 }