[gimp] tools: replace performance-log viewer call-graph direction icons

[Ell <ell src gnome org>]

commit c7a4eb46024d7b073c1182d78f41c4d33817c1c5
Author: Ell <ell_se yahoo com>
Date:   Fri Sep 21 07:36:34 2018 -0400

    tools: replace performance-log viewer call-graph direction icons
    
    Use the less-ambiguous, if just as clumsy,
    "format-indent-more/less" icons, to stand for the
    caller -> callee, and callee -> caller, directions, respectively.

 tools/performance-log-viewer.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/tools/performance-log-viewer.py b/tools/performance-log-viewer.py
index ae4f355d04..51799ae6a7 100755
--- a/tools/performance-log-viewer.py
+++ b/tools/performance-log-viewer.py
@@ -1839,7 +1839,7 @@ class ProfileViewer (Gtk.ScrolledWindow):
             header.show ()
 
             if not id:
-                button = Gtk.Button (tooltip_text = "Graph direction")
+                button = Gtk.Button (tooltip_text = "Call-graph direction")
                 header.pack_end (button)
                 button.show ()
 
@@ -2021,9 +2021,9 @@ class ProfileViewer (Gtk.ScrolledWindow):
         def update_ui (self):
             if not self.id:
                 if self.direction == self.Direction.CALLEES:
-                    icon_name = "go-up-symbolic"
+                    icon_name = "format-indent-more-symbolic"
                 else:
-                    icon_name = "go-down-symbolic"
+                    icon_name = "format-indent-less-symbolic"
 
                 self.direction_image.set_from_icon_name (icon_name,
                                                          Gtk.IconSize.BUTTON)