From 62feb6709e79ecc851341f9975ded7d6f2ff00b7 Mon Sep 17 00:00:00 2001
From: Brian Hackett <bhackett1024@gmail.com>
Date: Mon, 23 Jul 2018 14:49:33 +0000
Subject: [PATCH] Bug 1465294 Part 1 - Always use the chrome tab group in
 middleman processes, r=smaug.

--HG--
extra : rebase_source : 608e3c225526b42e126293f068ed01a45f36432c
---
 dom/base/TabGroup.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dom/base/TabGroup.cpp b/dom/base/TabGroup.cpp
index 5884bb6df7a7..26441d4ffb86 100644
--- a/dom/base/TabGroup.cpp
+++ b/dom/base/TabGroup.cpp
@@ -120,6 +120,11 @@ TabGroup::GetFromActor(TabChild* aTabChild)
 {
   MOZ_RELEASE_ASSERT(NS_IsMainThread());
 
+  // Middleman processes do not assign event targets to their tab children.
+  if (recordreplay::IsMiddleman()) {
+    return GetChromeTabGroup();
+  }
+
   nsCOMPtr<nsIEventTarget> target = aTabChild->Manager()->GetEventTargetFor(aTabChild);
   if (!target) {
     return nullptr;