Fully deprecate FixedArray::CopySize method.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 586fd8613a5a4b9dcaa5b47bfa4d56e65d804c7b..ceadd4ed8b62776d355a0ea96f8efe2702cd444c 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -775,6 +775,7 @@ static i::Handle<i::FixedArray> EmbedderDataFor(Context* context,
                                                 bool can_grow,
                                                 const char* location) {
   i::Handle<i::Context> env = Utils::OpenHandle(context);
+  i::Isolate* isolate = env->GetIsolate();
   bool ok =
       Utils::ApiCheck(env->IsNativeContext(),
                       location,
@@ -787,7 +788,8 @@ static i::Handle<i::FixedArray> EmbedderDataFor(Context* context,
     return i::Handle<i::FixedArray>();
   }
   int new_size = i::Max(index, data->length() << 1) + 1;
-  data = i::FixedArray::CopySize(data, new_size);
+  int grow_by = new_size - data->length();
+  data = isolate->factory()->CopyFixedArrayAndGrow(data, grow_by);
   env->set_embedder_data(*data);
   return data;
 }