Move 'fullscreen' definition to the liberator module.

common/content/buffer.js

@@ -147,15 +147,6 @@ function Buffer() //{{{
     ////////////////////// OPTIONS /////////////////////////////////////////////////
     /////////////////////////////////////////////////////////////////////////////{{{
 
-    // FIXME: Most certainly belongs elsewhere.
-    options.add(["fullscreen", "fs"],
-        "Show the current window fullscreen",
-        "boolean", false,
-        {
-            setter: function (value) window.fullScreen = value,
-            getter: function () window.fullScreen
-        });
-
     options.add(["nextpattern"], // \u00BB is » (>> in a single char)
         "Patterns to use when guessing the 'next' page in a document sequence",
         "stringlist", "\\bnext\\b,^>$,^(>>|\u00BB)$,^(>|\u00BB),(>|\u00BB)$,\\bmore\\b");

common/content/liberator.js

@@ -212,6 +212,14 @@ const liberator = (function () //{{{
             }
         };
 
+        options.add(["fullscreen", "fs"],
+            "Show the current window fullscreen",
+            "boolean", false,
+            {
+                setter: function (value) window.fullScreen = value,
+                getter: function () window.fullScreen
+            });
+
         options.add(["guioptions", "go"],
             "Show or hide certain GUI elements like the menu or toolbar",
             "charlist", config.defaults.guioptions || "",