Bug 1436400 - Part 9: Support restarting module load request. r=jonco

After enabling bytecode cache for module script, we need to handle
the SRI mismatch on bytecode cache, that requires reloading the script source
again.

Differential Revision: https://phabricator.services.mozilla.com/D140551

dom/script/ScriptLoader.cpp

@@ -487,7 +487,12 @@ nsresult ScriptLoader::RestartLoad(ScriptLoadRequest* aRequest) {
   // Start a new channel from which we explicitly request to stream the source
   // instead of the bytecode.
   aRequest->mProgress = ScriptLoadRequest::Progress::eLoading_Source;
-  nsresult rv = StartLoad(aRequest);
+  nsresult rv;
+  if (aRequest->IsModuleRequest()) {
+    rv = mModuleLoader->RestartModuleLoad(aRequest);
+  } else {
+    rv = StartLoad(aRequest);
+  }
   if (NS_FAILED(rv)) {
     return rv;
   }