[gnome-shell] cleanup: Use (un)block_signal_handler() convenience wrapper

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 284ace5b5f86990325970a94e68ef687f52f4bdf
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Oct 30 18:11:56 2019 +0100

    cleanup: Use (un)block_signal_handler() convenience wrapper
    
    We now depend on a gjs version that is guaranteed to provide those
    more idiomatic wrappers, so use them instead of the clunkier static
    methods.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/795

 js/extensionPrefs/main.js  | 4 ++--
 js/ui/status/brightness.js | 4 ++--
 js/ui/status/volume.js     | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/js/extensionPrefs/main.js b/js/extensionPrefs/main.js
index bd696523e8..b9d34f918e 100644
--- a/js/extensionPrefs/main.js
+++ b/js/extensionPrefs/main.js
@@ -579,9 +579,9 @@ class ExtensionRow extends Gtk.ListBoxRow {
                 this._extension = ExtensionUtils.deserializeExtension(newState);
                 let state = (this._extension.state == ExtensionState.ENABLED);
 
-                GObject.signal_handler_block(this._switch, this._notifyActiveId);
+                this._switch.block_signal_handler(this._notifyActiveId);
                 this._switch.state = state;
-                GObject.signal_handler_unblock(this._switch, this._notifyActiveId);
+                this._switch.unblock_signal_handler(this._notifyActiveId);
 
                 this._switch.sensitive = this._canToggle();
             });
diff --git a/js/ui/status/brightness.js b/js/ui/status/brightness.js
index 1abdab47e2..b6e6ef8365 100644
--- a/js/ui/status/brightness.js
+++ b/js/ui/status/brightness.js
@@ -57,9 +57,9 @@ class Indicator extends PanelMenu.SystemIndicator {
     }
 
     _changeSlider(value) {
-        GObject.signal_handler_block(this._slider, this._sliderChangedId);
+        this._slider.block_signal_handler(this._sliderChangedId);
         this._slider.value = value;
-        GObject.signal_handler_unblock(this._slider, this._sliderChangedId);
+        this._slider.unblock_signal_handler(this._sliderChangedId);
     }
 
     _sync() {
diff --git a/js/ui/status/volume.js b/js/ui/status/volume.js
index 9109121c49..a4c7a823fe 100644
--- a/js/ui/status/volume.js
+++ b/js/ui/status/volume.js
@@ -131,9 +131,9 @@ var StreamSlider = class {
     }
 
     _changeSlider(value) {
-        GObject.signal_handler_block(this._slider, this._sliderChangedId);
+        this._slider.block_signal_handler(this._sliderChangedId);
         this._slider.value = value;
-        GObject.signal_handler_unblock(this._slider, this._sliderChangedId);
+        this._slider.unblock_signal_handler(this._sliderChangedId);
     }
 
     _updateVolume() {