[WIP Prototype] ES6 https://html.spec.whatwg.org/#fetch-a-single-module-script implementation

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

Index: third_party/WebKit/Source/core/dom/ScriptModuleResolver.h
diff --git a/third_party/WebKit/Source/core/dom/ScriptModuleResolver.h b/third_party/WebKit/Source/core/dom/ScriptModuleResolver.h
index 5ac520aa9a6f4447383f35f4c6df63c86d8dcc08..dafd80d6b13fd9ee7870d6335166ff26740d93e8 100644
--- a/third_party/WebKit/Source/core/dom/ScriptModuleResolver.h
+++ b/third_party/WebKit/Source/core/dom/ScriptModuleResolver.h
@@ -22,6 +22,10 @@ class ModuleScript;
 // the specifier, and the module identified by 'x' is the descendant.
 // ScriptModuleResolver, given a referrer and specifier, can look up the
 // descendant.
+//
+// In terms of spec, ScriptModuleResolver is also used to set
+// "referencingModule.[[HostDefined]]" used in:
+// https://html.spec.whatwg.org/multipage/webappapis.html#resolve-a-module-specifier
 class CORE_EXPORT ScriptModuleResolver
     : public GarbageCollectedFinalized<ScriptModuleResolver> {
  public: