From a21cdf67b1544a1fd41724f6721311e0b9604713 Mon Sep 17 00:00:00 2001
From: Andreea Pavel <apavel@mozilla.com>
Date: Tue, 14 Aug 2018 08:22:04 +0300
Subject: [PATCH] Backed out changeset b7531c106b59 (bug 1480934) for failing
 android at
 mobile/android/tests/browser/chrome/test_session_scroll_position.html on a
 CLOSED TREE

---
 toolkit/components/reader/AboutReader.jsm | 20 ++++++++++----------
 toolkit/themes/shared/aboutReader.css     |  4 ----
 2 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/toolkit/components/reader/AboutReader.jsm b/toolkit/components/reader/AboutReader.jsm
index 7f22e86b6635..7b161bbd6917 100644
--- a/toolkit/components/reader/AboutReader.jsm
+++ b/toolkit/components/reader/AboutReader.jsm
@@ -782,8 +782,8 @@ AboutReader.prototype = {
   },
 
   _showError() {
-    this._headerElement.classList.remove("reader-show-element");
-    this._contentElement.classList.remove("reader-show-element");
+    this._headerElement.style.display = "none";
+    this._contentElement.style.display = "none";
 
     let errorMessage = gStrings.GetStringFromName("aboutReader.loadError");
     this._messageElement.textContent = errorMessage;
@@ -817,7 +817,7 @@ AboutReader.prototype = {
   },
 
   _showContent(article) {
-    this._messageElement.classList.remove("reader-show-element");
+    this._messageElement.style.display = "none";
 
     this._article = article;
 
@@ -830,7 +830,7 @@ AboutReader.prototype = {
     this._readTimeElement.textContent = this._formatReadTime(article.readingTimeMinsSlow, article.readingTimeMinsFast);
     this._doc.title = article.title;
 
-    this._headerElement.classList.add("reader-show-element");
+    this._headerElement.style.display = "block";
 
     let parserUtils = Cc["@mozilla.org/parserutils;1"].getService(Ci.nsIParserUtils);
     let contentFragment = parserUtils.parseFragment(article.content,
@@ -841,7 +841,7 @@ AboutReader.prototype = {
     this._maybeSetTextDirection(article);
     this._foundLanguage(article.language);
 
-    this._contentElement.classList.add("reader-show-element");
+    this._contentElement.style.display = "block";
     this._updateImageMargins();
 
     this._requestFavicon();
@@ -856,8 +856,8 @@ AboutReader.prototype = {
   },
 
   _hideContent() {
-    this._headerElement.classList.remove("reader-show-element");
-    this._contentElement.classList.remove("reader-show-element");
+    this._headerElement.style.display = "none";
+    this._contentElement.style.display = "none";
   },
 
   _showProgressDelayed() {
@@ -869,11 +869,11 @@ AboutReader.prototype = {
         return;
       }
 
-      this._headerElement.classList.remove("reader-show-element");
-      this._contentElement.classList.remove("reader-show-element");
+      this._headerElement.style.display = "none";
+      this._contentElement.style.display = "none";
 
       this._messageElement.textContent = gStrings.GetStringFromName("aboutReader.loading2");
-      this._messageElement.classList.add("reader-show-element");
+      this._messageElement.style.display = "block";
     }, 300);
   },
 
diff --git a/toolkit/themes/shared/aboutReader.css b/toolkit/themes/shared/aboutReader.css
index 9dc31c2d63e2..50e96f1f6d52 100644
--- a/toolkit/themes/shared/aboutReader.css
+++ b/toolkit/themes/shared/aboutReader.css
@@ -761,7 +761,3 @@ body:not(.loaded) .toolbar:-moz-locale-dir(rtl) {
   margin: 0 .07em;
   padding: 0;
 }
-
-.reader-show-element {
-  display: initial;
-}