[epiphany/wip/exalm/gtk4-cleanups-3: 17/23] Stop using shadow-type on GtkFrame and GtkScrolledWindow

[Marge Bot <marge-bot src gnome org>]

commit babcf277950c83390a6df39aad5de3771e3fcede
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Dec 2 03:49:13 2021 +0500

    Stop using shadow-type on GtkFrame and GtkScrolledWindow
    
    They will go away in GTK4. The default on GtkFrame is fine, on scrolled
    window add .frame style class instead.
    
    Delete random label_xalign as well, they are unused.
    
    Part-of: <https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1038>

 src/resources/gtk/encoding-dialog.ui   | 8 +++-----
 src/resources/gtk/prefs-lang-dialog.ui | 4 +++-
 2 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/src/resources/gtk/encoding-dialog.ui b/src/resources/gtk/encoding-dialog.ui
index a13d599b7..523b05d00 100644
--- a/src/resources/gtk/encoding-dialog.ui
+++ b/src/resources/gtk/encoding-dialog.ui
@@ -76,8 +76,6 @@
                       <object class="GtkFrame">
                         <property name="visible">True</property>
                         <property name="vexpand">True</property>
-                        <property name="label_xalign">0</property>
-                        <property name="shadow_type">in</property>
                         <child>
                           <object class="GtkListBox" id="recent_list_box">
                             <property name="visible">True</property>
@@ -108,8 +106,6 @@
                       <object class="GtkFrame">
                         <property name="visible">True</property>
                         <property name="border_width">6</property>
-                        <property name="label_xalign">0</property>
-                        <property name="shadow_type">none</property>
                         <child>
                           <object class="GtkListBox" id="related_list_box">
                             <property name="visible">True</property>
@@ -137,7 +133,9 @@
               <object class="GtkScrolledWindow">
                 <property name="visible">True</property>
                 <property name="hscrollbar_policy">never</property>
-                <property name="shadow_type">in</property>
+                <style>
+                  <class name="frame"/>
+                </style>
                 <child>
                   <object class="GtkListBox" id="list_box">
                     <property name="visible">True</property>
diff --git a/src/resources/gtk/prefs-lang-dialog.ui b/src/resources/gtk/prefs-lang-dialog.ui
index 0fa1bc561..b006eaf56 100644
--- a/src/resources/gtk/prefs-lang-dialog.ui
+++ b/src/resources/gtk/prefs-lang-dialog.ui
@@ -58,8 +58,10 @@
               <object class="GtkScrolledWindow" id="scrolledwindow3">
                 <property name="visible">True</property>
                 <property name="hscrollbar_policy">never</property>
-                <property name="shadow_type">in</property>
                 <property name="vexpand">True</property>
+                <style>
+                  <class name="frame"/>
+                </style>
                 <child>
                   <object class="GtkTreeView" id="languages_treeview">
                     <property name="visible">True</property>