Don't run young generation large object tests for nosnap configurations.

Bug: chromium:852420
Change-Id: I01d0bed33a573adbe1d9365868d63ea9c3cb0552
Reviewed-on: https://chromium-review.googlesource.com/c/1346499Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57697}

test/cctest/heap/test-heap.cc

@@ -5733,6 +5733,7 @@ TEST(YoungGenerationLargeObjectAllocation) {
   v8::HandleScope scope(CcTest::isolate());
   Heap* heap = CcTest::heap();
   Isolate* isolate = heap->isolate();
+  if (!isolate->serializer_enabled()) return;
 
   Handle<FixedArray> array = isolate->factory()->NewFixedArray(200000);
   MemoryChunk* chunk = MemoryChunk::FromAddress(array->address());