From affeeb8ac72b0c5feaf763c13d7292d4e2b8bde5 Mon Sep 17 00:00:00 2001
From: Peter Van der Beken <peterv@propagandism.org>
Date: Mon, 2 May 2022 07:36:53 +0000
Subject: [PATCH] Bug 1688585 - extensions::RequestWorkerRunnable::Init should
 propagate failure of dom::PromiseWorkerProxy::Create. r=rpl

Differential Revision: https://phabricator.services.mozilla.com/D145066
---
 .../webidl-api/ExtensionAPIRequestForwarder.cpp      | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/toolkit/components/extensions/webidl-api/ExtensionAPIRequestForwarder.cpp b/toolkit/components/extensions/webidl-api/ExtensionAPIRequestForwarder.cpp
index 0edae10dfee6..10a8f0e72a67 100644
--- a/toolkit/components/extensions/webidl-api/ExtensionAPIRequestForwarder.cpp
+++ b/toolkit/components/extensions/webidl-api/ExtensionAPIRequestForwarder.cpp
@@ -337,9 +337,15 @@ void RequestWorkerRunnable::Init(nsIGlobalObject* aGlobal, JSContext* aCx,
     return;
   }
 
-  mPromiseProxy = dom::PromiseWorkerProxy::Create(
-      mWorkerPrivate, aPromiseRetval,
-      &kExtensionAPIRequestStructuredCloneCallbacks);
+  RefPtr<dom::PromiseWorkerProxy> promiseProxy =
+      dom::PromiseWorkerProxy::Create(
+          mWorkerPrivate, aPromiseRetval,
+          &kExtensionAPIRequestStructuredCloneCallbacks);
+  if (!promiseProxy) {
+    aRv.Throw(NS_ERROR_DOM_ABORT_ERR);
+    return;
+  }
+  mPromiseProxy = promiseProxy.forget();
 }
 
 void RequestWorkerRunnable::SetSerializedCallerStack(