[ES6 modules] Introduce ModuleTreeLinker

third_party/WebKit/Source/core/dom/ModuleScript.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ModuleScript_h
 #define ModuleScript_h
 
 #include "bindings/core/v8/ScriptModule.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
@@ skipping 25 matching lines @@
       const KURL& base_url,
       const String& nonce,
       ParserDisposition parser_state,
       WebURLRequest::FetchCredentialsMode credentials_mode) {
     return new ModuleScript(settings_object, record, base_url, nonce,
                             parser_state, credentials_mode);
   }
   ~ModuleScript() override = default;
 
   ScriptModule& Record() { return record_; }
-  void ClearRecord() { record_ = ScriptModule(); }
   const KURL& BaseURL() const { return base_url_; }
 
   ModuleInstantiationState InstantiationState() const {
     return instantiation_state_;
   }
 
+  // Implements Step 7.1 of:
+  // https://html.spec.whatwg.org/multipage/webappapis.html#internal-module-script-graph-fetching-procedure
+  void SetInstantiationErrorAndClearRecord(ScriptValue error);
+  // Implements Step 7.2 of:
+  // https://html.spec.whatwg.org/multipage/webappapis.html#internal-module-script-graph-fetching-procedure
   void SetInstantiationSuccess();
-  void SetInstantiationError(v8::Isolate*, v8::Local<v8::Value> error);
 
   ParserDisposition ParserState() const { return parser_state_; }
   WebURLRequest::FetchCredentialsMode CredentialsMode() const {
     return credentials_mode_;
   }
   const String& Nonce() const { return nonce_; }
 
   DECLARE_TRACE();
   DECLARE_TRACE_WRAPPERS();
 
@@ skipping 48 matching lines @@
   // https://html.spec.whatwg.org/multipage/webappapis.html#concept-module-script-parser
   const ParserDisposition parser_state_;
 
   // https://html.spec.whatwg.org/multipage/webappapis.html#concept-module-script-credentials-mode
   const WebURLRequest::FetchCredentialsMode credentials_mode_;
 };
 
 }  // namespace blink
 
 #endif