Bug 1761938 - Part 1: Call into the module loader via the module load request object r=yulia

The script loader will need to deal with requests from more than one module
loader so this adds methods to the request which dispatch to the correct
loader.

Differential Revision: https://phabricator.services.mozilla.com/D142828

js/loader/ModuleLoaderBase.h

@@ -142,10 +142,12 @@ class ModuleLoaderBase : public nsISupports {
   // Public API methods.
 
  public:
+  ScriptLoaderInterface* GetScriptLoaderInterface() const { return mLoader; }
+
   bool HasPendingDynamicImports() const;
   void CancelDynamicImport(ModuleLoadRequest* aRequest, nsresult aResult);
 #ifdef DEBUG
-  bool HasDynamicImport(ModuleLoadRequest* aRequest) const;
+  bool HasDynamicImport(const ModuleLoadRequest* aRequest) const;
 #endif
 
   // Start a load for a module script URI. Returns immediately if the module is
@@ -161,7 +163,7 @@ class ModuleLoaderBase : public nsISupports {
 
   // Implements https://html.spec.whatwg.org/#run-a-module-script
   nsresult EvaluateModule(nsIGlobalObject* aGlobalObject,
-                          ScriptLoadRequest* aRequest);
+                          ModuleLoadRequest* aRequest);
 
   void StartDynamicImport(ModuleLoadRequest* aRequest);
   void ProcessDynamicImport(ModuleLoadRequest* aRequest);
@@ -215,7 +217,7 @@ class ModuleLoaderBase : public nsISupports {
   ModuleScript* GetFetchedModule(nsIURI* aURL, nsIGlobalObject* aGlobal) const;
 
   // Helper function to set up the global correctly for dynamic imports.
-  nsresult EvaluateModule(ScriptLoadRequest* aRequest);
+  nsresult EvaluateModule(ModuleLoadRequest* aRequest);
 
   JS::Value FindFirstParseError(ModuleLoadRequest* aRequest);
   static nsresult InitDebuggerDataForModuleTree(JSContext* aCx,