Review: Port from GObject to GLib

Fix new flake8 issues introduced by cb0d6e2.

src/sugar3/activity/activityfactory.py

@@ -236,8 +236,7 @@ class ActivityCreationHandler(GObject.GObject):
 
         GLib.child_watch_add(child.pid,
                              _child_watch_cb,
-                             (log_file,
-                             self._handle.activity_id))
+                             (log_file, self._handle.activity_id))
 
     def _no_reply_handler(self, *args):
         pass

src/sugar3/graphics/tray.py

@@ -37,8 +37,10 @@ class _TrayViewport(Gtk.Viewport):
 
     __gproperties__ = {
         'scrollable': (bool, None, None, False, GObject.ParamFlags.READABLE),
-        'can-scroll-prev': (bool, None, None, False, GObject.ParamFlags.READABLE),
-        'can-scroll-next': (bool, None, None, False, GObject.ParamFlags.READABLE),
+        'can-scroll-prev': (bool, None, None, False,
+                            GObject.ParamFlags.READABLE),
+        'can-scroll-next': (bool, None, None, False,
+                            GObject.ParamFlags.READABLE),
     }
 
     def __init__(self, orientation):
@@ -333,7 +335,8 @@ class VTray(Gtk.EventBox):
 
     __gproperties__ = {
         'align': (int, None, None, 0, 1, ALIGN_TO_START,
-                  GObject.ParamFlags.READWRITE | GObject.ParamFlags.CONSTRUCT_ONLY),
+                  GObject.ParamFlags.READWRITE |
+                  GObject.ParamFlags.CONSTRUCT_ONLY),
         'drag-active': (bool, None, None, False, GObject.ParamFlags.READWRITE),
     }