[gnome-shell] keyboard: split out a function

[Cosimo Cecchi <cosimoc src gnome org>]

commit 9aa3d864dc58091a1542c26cbb8b3193d2775228
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Tue May 24 11:55:13 2016 -0700

    keyboard: split out a function
    
    We're going to use this in a later commit.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=766826

 js/ui/status/keyboard.js |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/status/keyboard.js b/js/ui/status/keyboard.js
index d357258..895b73c 100644
--- a/js/ui/status/keyboard.js
+++ b/js/ui/status/keyboard.js
@@ -261,9 +261,9 @@ const InputSourceSessionSettings = new Lang.Class({
         this._settings.connect('changed::' + this._KEY_PER_WINDOW, Lang.bind(this, 
this._emitPerWindowChanged));
     },
 
-    get inputSources() {
+    _getSourcesList: function(key) {
         let sourcesList = [];
-        let sources = this._settings.get_value(this._KEY_INPUT_SOURCES);
+        let sources = this._settings.get_value(key);
         let nSources = sources.n_children();
 
         for (let i = 0; i < nSources; i++) {
@@ -273,6 +273,10 @@ const InputSourceSessionSettings = new Lang.Class({
         return sourcesList;
     },
 
+    get inputSources() {
+        return this._getSourcesList(this._KEY_INPUT_SOURCES);
+    },
+
     get keyboardOptions() {
         return this._settings.get_strv(this._KEY_KEYBOARD_OPTIONS);
     },