[sysprof/wip/visualizers] window: add tooltips

[Christian Hergert <chergert src gnome org>]

commit 879d00199a3813b72cf520585653eef2fbe92f75
Author: Christian Hergert <chergert redhat com>
Date:   Fri Sep 30 13:55:53 2016 -0700

    window: add tooltips

 src/resources/ui/sp-window.ui |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/ui/sp-window.ui b/src/resources/ui/sp-window.ui
index 040917f..005c31e 100644
--- a/src/resources/ui/sp-window.ui
+++ b/src/resources/ui/sp-window.ui
@@ -219,6 +219,7 @@
               <object class="GtkButton">
                 <property name="action-name">zoom.zoom-out</property>
                 <property name="hexpand">true</property>
+                <property name="tooltip-text" translatable="yes">Zoom out (Ctrl+-)</property>
                 <property name="visible">true</property>
                 <style>
                   <class name="image-button"/>
@@ -234,6 +235,7 @@
             <child>
               <object class="GtkButton">
                 <property name="action-name">zoom.zoom-one</property>
+                <property name="tooltip-text" translatable="yes">Reset zoom level (Ctrl+0)</property>
                 <property name="visible">true</property>
                 <child>
                   <object class="GtkLabel" id="zoom_one_label">
@@ -247,6 +249,7 @@
               <object class="GtkButton">
                 <property name="action-name">zoom.zoom-in</property>
                 <property name="hexpand">true</property>
+                <property name="tooltip-text" translatable="yes">Zoom in (Ctrl++)</property>
                 <property name="visible">true</property>
                 <style>
                   <class name="image-button"/>