Declarative content scripts: Browser-side: per-extension shared memory regions (lazily loaded)

extensions/renderer/user_script_set_manager.cc

Index: extensions/renderer/user_script_set_manager.cc
diff --git a/extensions/renderer/user_script_set_manager.cc b/extensions/renderer/user_script_set_manager.cc
index 6aa22d91dc8351ceac92d7d4889790c521eb0163..9e98aadf037724888f3164e7f40ba846c908f4cd 100644
--- a/extensions/renderer/user_script_set_manager.cc
+++ b/extensions/renderer/user_script_set_manager.cc
@@ -107,21 +107,11 @@ void UserScriptSetManager::OnUpdateUserScripts(
   }
   DCHECK(scripts);
 
-  // If no extensions are included in the set, that indicates that all
-  // extensions were updated. Add them all to the set so that observers and
-  // individual UserScriptSets don't need to know this detail.
-  const std::set<std::string>* effective_extensions = &changed_extensions;
-  std::set<std::string> all_extensions;
-  if (changed_extensions.empty()) {
-    all_extensions = extensions_->GetIDs();
-    effective_extensions = &all_extensions;
-  }
-
-  if (scripts->UpdateUserScripts(shared_memory, *effective_extensions)) {
+  if (scripts->OnUpdateUserScripts(shared_memory, changed_extensions)) {
     FOR_EACH_OBSERVER(
         Observer,
         observers_,
-        OnUserScriptsUpdated(*effective_extensions, scripts->scripts()));
+        OnUserScriptsUpdated(changed_extensions, scripts->scripts()));
   }
 }