Fully deprecate FixedArray::CopySize method.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index f7916ed7fc5baecba2bdb5152b93991d21c4252a..ccbeadc79c920f01c170bba2503f5756d8497ad6 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -2643,7 +2643,7 @@ void Isolate::EnqueueMicrotask(Handle<Object> microtask) {
     queue = factory()->NewFixedArray(8);
     heap()->set_microtask_queue(*queue);
   } else if (num_tasks == queue->length()) {
-    queue = FixedArray::CopySize(queue, num_tasks * 2);
+    queue = factory()->CopyFixedArrayAndGrow(queue, num_tasks);
     heap()->set_microtask_queue(*queue);
   }
   DCHECK(queue->get(num_tasks)->IsUndefined());
@@ -2744,7 +2744,7 @@ void Isolate::AddDetachedContext(Handle<Context> context) {
   Handle<WeakCell> cell = factory()->NewWeakCell(context);
   Handle<FixedArray> detached_contexts(heap()->detached_contexts());
   int length = detached_contexts->length();
-  detached_contexts = FixedArray::CopySize(detached_contexts, length + 2);
+  detached_contexts = factory()->CopyFixedArrayAndGrow(detached_contexts, 2);
   detached_contexts->set(length, Smi::FromInt(0));
   detached_contexts->set(length + 1, *cell);
   heap()->set_detached_contexts(*detached_contexts);