[modules] Basic support of import statements.

src/runtime/runtime-object.cc

 // Copyright 2014 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 "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug/debug.h"
 #include "src/isolate-inl.h"
@@ skipping 950 matching lines @@
 }
 
 RUNTIME_FUNCTION(Runtime_LoadModuleExport) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
   Handle<Module> module(isolate->context()->module());
   return *Module::LoadExport(module, name);
 }
 
+RUNTIME_FUNCTION(Runtime_LoadModuleImport) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+  CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
+  CONVERT_ARG_HANDLE_CHECKED(Smi, module_request, 1);
+  Handle<Module> module(isolate->context()->module());
+  return *Module::LoadImport(module, name, module_request->value());
+}
+
 RUNTIME_FUNCTION(Runtime_StoreModuleExport) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 1);
   Handle<Module> module(isolate->context()->module());
   Module::StoreExport(module, name, value);
   return isolate->heap()->undefined_value();
 }
 
 }  // namespace internal
 }  // namespace v8