[modules] Do path resolution relative to each module file in d8

src/api.cc

 // Copyright 2012 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/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 1897 matching lines @@
     shared = i::handle(i::SharedFunctionInfo::cast(self->code()), isolate);
   } else {
     shared = i::handle(i::JSFunction::cast(self->code())->shared(), isolate);
   }
   i::Handle<i::FixedArray> module_requests(
       shared->scope_info()->ModuleDescriptorInfo()->module_requests(), isolate);
   CHECK_LT(i, module_requests->length());
   return ToApiHandle<String>(i::handle(module_requests->get(i), isolate));
 }
 
+void Module::SetEmbedderData(Local<Value> data) {
+  Utils::OpenHandle(this)->set_embedder_data(*Utils::OpenHandle(*data));
+}
+
+Local<Value> Module::GetEmbedderData() const {
+  auto self = Utils::OpenHandle(this);
+  return ToApiHandle<Value>(
+      i::handle(self->embedder_data(), self->GetIsolate()));
+}
+
 bool Module::Instantiate(Local<Context> v8_context,
                          Module::ResolveCallback callback,
                          Local<Value> callback_data) {
   i::Handle<i::Module> self = Utils::OpenHandle(this);
   i::Isolate* isolate = self->GetIsolate();
 
   // Already instantiated.
   if (self->code()->IsJSFunction()) return true;
 
   i::Handle<i::SharedFunctionInfo> shared(
@@ skipping 7492 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8