From 554556b4057330654ac39bd5b2c79b9c361dd638 Mon Sep 17 00:00:00 2001
From: Panos Astithas <past@mozilla.com>
Date: Wed, 7 Jun 2017 15:56:05 +0300
Subject: [PATCH] Bug 1369248 - Don't mute tabs when dragging to a new window.
 r=florian

MozReview-Commit-ID: 2HhT06vkLkH

--HG--
extra : rebase_source : 0b9d01331f3f64c6ec4c391a7a737b1d6ae985f7
---
 browser/base/content/tabbrowser.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/browser/base/content/tabbrowser.xml b/browser/base/content/tabbrowser.xml
index 0f785f062cb23..8c157def7ea19 100644
--- a/browser/base/content/tabbrowser.xml
+++ b/browser/base/content/tabbrowser.xml
@@ -2862,7 +2862,7 @@
             }
 
             // Mute audio immediately to improve perceived speed of tab closure.
-            if (aTab.hasAttribute("soundplaying")) {
+            if (!aAdoptedByTab && aTab.hasAttribute("soundplaying")) {
               // Don't persist the muted state as this wasn't a user action.
               // This lets undo-close-tab return it to an unmuted state.
               aTab.linkedBrowser.mute(true);
-- 
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