From e0ca338841eff8b396741ce34be58595fa8b0145 Mon Sep 17 00:00:00 2001
From: Jon Newmuis <newmuis@users.noreply.github.com>
Date: Thu, 21 Feb 2019 10:53:40 -0500
Subject: [PATCH] Move upgradeBackgroundAudio to layoutCallback (#20982)

---
 extensions/amp-story/1.0/amp-story-page.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/amp-story/1.0/amp-story-page.js b/extensions/amp-story/1.0/amp-story-page.js
index 2b84901480ad7..e3dc87ca19836 100644
--- a/extensions/amp-story/1.0/amp-story-page.js
+++ b/extensions/amp-story/1.0/amp-story-page.js
@@ -237,7 +237,6 @@ export class AmpStoryPage extends AMP.BaseElement {
 
   /** @override */
   buildCallback() {
-    upgradeBackgroundAudio(this.element);
     this.delegateVideoAutoplay();
     this.markMediaElementsWithPreload_();
     this.initializeMediaPool_();
@@ -364,6 +363,7 @@ export class AmpStoryPage extends AMP.BaseElement {
 
   /** @override */
   layoutCallback() {
+    upgradeBackgroundAudio(this.element);
     this.muteAllMedia();
 
     return Promise.all([