[snapshot] Move builtins generation into mksnapshot

test/cctest/setup-isolate-for-tests.cc

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "test/cctest/setup-isolate-for-tests.h"
+
+#include "src/interpreter/setup-interpreter.h"
+
+namespace v8 {
+namespace internal {
+
+void SetupIsolateDelegateForTests::SetupBuiltins(Isolate* isolate,
+                                                 bool create_heap_objects) {
+  if (create_heap_objects) {
+    SetupBuiltinsInternal(isolate);
+  }
+}
+
+void SetupIsolateDelegateForTests::SetupInterpreter(
+    interpreter::Interpreter* interpreter, bool create_heap_objects) {
+  if (create_heap_objects) {
+    interpreter::SetupInterpreter::InstallBytecodeHandlers(interpreter);
+  }
+}
+
+}  // namespace internal
+}  // namespace v8