Remove unused isolate parameter from NumberToSize and TryNumberToSize

src/heap/array-buffer-tracker-inl.h

Index: src/heap/array-buffer-tracker-inl.h
diff --git a/src/heap/array-buffer-tracker-inl.h b/src/heap/array-buffer-tracker-inl.h
index 27c593d0f073e9d35e7b1a97da65da5473b64aef..f5bdead89a5d74f7b791d6ba170ab2bbb5474ac0 100644
--- a/src/heap/array-buffer-tracker-inl.h
+++ b/src/heap/array-buffer-tracker-inl.h
@@ -14,7 +14,7 @@ void ArrayBufferTracker::RegisterNew(Heap* heap, JSArrayBuffer* buffer) {
   void* data = buffer->backing_store();
   if (!data) return;
 
-  size_t length = NumberToSize(heap->isolate(), buffer->byte_length());
+  size_t length = NumberToSize(buffer->byte_length());
   Page* page = Page::FromAddress(buffer->address());
   {
     base::LockGuard<base::Mutex> guard(page->mutex());