Bug 1781124 - Use static pref for dom.importMaps.enabled in module loader. r=allstarschh

Differential Revision: https://phabricator.services.mozilla.com/D152712

js/loader/ModuleLoaderBase.cpp

@@ -24,6 +24,7 @@
 #include "mozilla/dom/ScriptLoadContext.h"
 #include "mozilla/CycleCollectedJSContext.h"  // nsAutoMicroTask
 #include "mozilla/Preferences.h"
+#include "mozilla/StaticPrefs_dom.h"
 #include "nsContentUtils.h"
 #include "nsICacheInfoChannel.h"  // nsICacheInfoChannel
 #include "nsNetUtil.h"            // NS_NewURI
@@ -599,14 +600,13 @@ nsresult ModuleLoaderBase::HandleResolveFailure(
 
 ResolveResult ModuleLoaderBase::ResolveModuleSpecifier(
     LoadedScript* aScript, const nsAString& aSpecifier) {
-  bool importMapsEnabled = Preferences::GetBool("dom.importMaps.enabled");
   // If import map is enabled, forward to the updated 'Resolve a module
   // specifier' algorithm defined in Import maps spec.
   //
   // Once import map is enabled by default,
   // ModuleLoaderBase::ResolveModuleSpecifier should be replaced by
   // ImportMap::ResolveModuleSpecifier.
-  if (importMapsEnabled) {
+  if (mozilla::StaticPrefs::dom_importMaps_enabled()) {
     return ImportMap::ResolveModuleSpecifier(mImportMap.get(), mLoader, aScript,
                                              aSpecifier);
   }