[extension SW] Support lazy events from extension service workers.

extensions/renderer/script_context.cc

Index: extensions/renderer/script_context.cc
diff --git a/extensions/renderer/script_context.cc b/extensions/renderer/script_context.cc
index 9a60177ad76ebe841bc8da9c7331b4081b9d14e4..531e416f6180196adafa3088710c9ab297e13d3d 100644
--- a/extensions/renderer/script_context.cc
+++ b/extensions/renderer/script_context.cc
@@ -254,6 +254,11 @@ std::string ScriptContext::GetEffectiveContextTypeDescription() const {
   return GetContextTypeDescriptionString(effective_context_type_);
 }
 
+const GURL& ScriptContext::service_worker_scope() const {
+  DCHECK_EQ(Feature::SERVICE_WORKER_CONTEXT, context_type());
+  return service_worker_scope_;
+}
+
 bool ScriptContext::IsAnyFeatureAvailableToContext(
     const Feature& api,
     CheckAliasStatus check_alias) {