[heap] Old generation limit is based on capacity.

test/cctest/heap/test-heap.cc

Index: test/cctest/heap/test-heap.cc
diff --git a/test/cctest/heap/test-heap.cc b/test/cctest/heap/test-heap.cc
index 784c8f0fb6a5beaf4e3db40c30c443f49fe4f310..57de3f0d181db2bb3700da18f8552499cd5bb519 100644
--- a/test/cctest/heap/test-heap.cc
+++ b/test/cctest/heap/test-heap.cc
@@ -5555,19 +5555,21 @@ UNINITIALIZED_TEST(Regress538257) {
   isolate->Enter();
   {
     i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
+    Heap* heap = i_isolate->heap();
     HandleScope handle_scope(i_isolate);
-    PagedSpace* old_space = i_isolate->heap()->old_space();
+    PagedSpace* old_space = heap->old_space();
     const int kMaxObjects = 10000;
     const int kFixedArrayLen = 512;
     Handle<FixedArray> objects[kMaxObjects];
-    for (int i = 0; (i < kMaxObjects) && old_space->CanExpand(Page::kPageSize);
+    for (int i = 0; (i < kMaxObjects) &&
+                    heap->CanExpandOldGeneration(old_space->AreaSize());
          i++) {
       objects[i] = i_isolate->factory()->NewFixedArray(kFixedArrayLen, TENURED);
       Page::FromAddress(objects[i]->address())
           ->SetFlag(MemoryChunk::FORCE_EVACUATION_CANDIDATE_FOR_TESTING);
     }
     SimulateFullSpace(old_space);
-    i_isolate->heap()->CollectGarbage(OLD_SPACE);
+    heap->CollectGarbage(OLD_SPACE);
     // If we get this far, we've successfully aborted compaction. Any further
     // allocations might trigger OOM.
   }