[test] Pass existing CppHeap to Isolate creation

New V8 API expects a CppHeap to exist for the whole existence of an
Isolate. Therefore the APIs for attaching and detaching a CppHeap get
deprecated, and an existing CppHeap has to be passed to the isolate
during isolate creation. This PR adjusts a test that passes an existing
CppHeap too late to the isolate.

Author: gahaas

src/api/environment.cc

@@ -378,9 +378,13 @@ Isolate* NewIsolate(ArrayBufferAllocator* allocator,
                     uv_loop_t* event_loop,
                     MultiIsolatePlatform* platform,
                     const EmbedderSnapshotData* snapshot_data,
-                    const IsolateSettings& settings) {
+                    const IsolateSettings& settings,
+                    std::unique_ptr<v8::CppHeap> cpp_heap) {
   Isolate::CreateParams params;
   if (allocator != nullptr) params.array_buffer_allocator = allocator;
+  if (cpp_heap) {
+    params.cpp_heap = cpp_heap.release();
+  }
   return NewIsolate(&params,
                     event_loop,
                     platform,

src/node.h

@@ -553,7 +553,8 @@ NODE_EXTERN v8::Isolate* NewIsolate(
     struct uv_loop_s* event_loop,
     MultiIsolatePlatform* platform,
     const EmbedderSnapshotData* snapshot_data = nullptr,
-    const IsolateSettings& settings = {});
+    const IsolateSettings& settings = {},
+    std::unique_ptr<v8::CppHeap> cpp_heap = {});
 NODE_EXTERN v8::Isolate* NewIsolate(
     std::shared_ptr<ArrayBufferAllocator> allocator,
     struct uv_loop_s* event_loop,