[gsettings-desktop-schemas] Add middle-click-emulation

[Carlos Garnacho <carlosg src gnome org>]

commit 75dedc6fb2ba51f17b79bb4274bdcaaa4a47267f
Author: Andrew Gaul <andrew gaul org>
Date:   Fri Oct 5 16:32:23 2018 -0700

    Add middle-click-emulation
    
    References GNOME/mutter#238.

 schemas/org.gnome.desktop.peripherals.gschema.xml.in | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
---
diff --git a/schemas/org.gnome.desktop.peripherals.gschema.xml.in 
b/schemas/org.gnome.desktop.peripherals.gschema.xml.in
index bb954b3..9f99d8d 100644
--- a/schemas/org.gnome.desktop.peripherals.gschema.xml.in
+++ b/schemas/org.gnome.desktop.peripherals.gschema.xml.in
@@ -60,6 +60,11 @@
       <summary>Click method</summary>
       <description>How to generate software-emulated buttons, either disabled (“none”), through specific 
areas (“areas”), number of fingers (“fingers”) or left as hardware default (“default”).</description>
     </key>
+    <key name="middle-click-emulation" type="b">
+      <default>false</default>
+      <summary>Emulate middle click</summary>
+      <description>Set this to TRUE to enable middle click during simultaneous left and right 
click.</description>
+    </key>
   </schema>
   <schema id="org.gnome.desktop.peripherals.keyboard" path="/org/gnome/desktop/peripherals/keyboard/">
     <key name="repeat" type="b">
@@ -110,6 +115,11 @@
       <summary>Acceleration profile</summary>
       <description>Acceleration profile used for connected mice. The acceleration profile can be set to 
either default (“default”) which uses the default acceleration profile for each device, flat (“flat”), which 
accelerates by a device specific constant factor derived from the configured pointer speed, or adaptive 
(“adaptive”) which adapts the acceleration depending on the mouse movement. If a mouse doesn’t support the 
configured profile, “default” will be used.</description>
     </key>
+    <key name="middle-click-emulation" type="b">
+      <default>false</default>
+      <summary>Emulate middle click</summary>
+      <description>Set this to TRUE to enable middle click during simultaneous left and right 
click.</description>
+    </key>
   </schema>
   <schema id="org.gnome.desktop.peripherals.tablet">
     <key name="output" type="as">
@@ -195,5 +205,10 @@
       <summary>Acceleration profile</summary>
       <description>Acceleration profile used for the trackball. The acceleration profile can be set to 
either default (“default”) which uses the default acceleration profile, flat (“flat”), which accelerates by a 
device specific constant factor derived from the configured speed, or adaptive (“adaptive”) which adapts the 
acceleration depending on the movement. If the trackball doesn’t support the configured profile, “default” 
will be used.</description>
     </key>
+    <key name="middle-click-emulation" type="b">
+      <default>false</default>
+      <summary>Emulate middle click</summary>
+      <description>Set this to TRUE to enable middle click during simultaneous left and right 
click.</description>
+    </key>
   </schema>
 </schemalist>