arc: Implement proper Arc window activation for task moving to front.

third_party/wayland-protocols/unstable/remote-shell/remote-shell-unstable-v1.xml

Index: third_party/wayland-protocols/unstable/remote-shell/remote-shell-unstable-v1.xml
diff --git a/third_party/wayland-protocols/unstable/remote-shell/remote-shell-unstable-v1.xml b/third_party/wayland-protocols/unstable/remote-shell/remote-shell-unstable-v1.xml
index 02d588f042e92dee68cfb2e11a6de7802833d869..b776a5d9117e4fa34e0594c511325d76a0edb72f 100644
--- a/third_party/wayland-protocols/unstable/remote-shell/remote-shell-unstable-v1.xml
+++ b/third_party/wayland-protocols/unstable/remote-shell/remote-shell-unstable-v1.xml
@@ -38,7 +38,7 @@
     reset.
   </description>
 
-  <interface name="zwp_remote_shell_v1" version="8">
+  <interface name="zwp_remote_shell_v1" version="9">
     <description summary="remote_shell">
       The global interface that allows clients to turn a wl_surface into a
       "real window" which is remotely managed but can be stacked, activated
@@ -150,7 +150,7 @@
     </event>
   </interface>
 
-  <interface name="zwp_remote_surface_v1" version="8">
+  <interface name="zwp_remote_surface_v1" version="9">
     <description summary="A desktop window">
       An interface that may be implemented by a wl_surface, for
       implementations that provide a desktop-style user interface
@@ -469,6 +469,14 @@
 	Suggests a surface should become non system modal.
       </description>
     </request>
+
+    <!-- Version 9 additions -->
+
+    <request name="activate" since="9">

[reveman, 2016/08/01 00:52:41]

Oh, one thing. Can you add:

<arg name="serial" type="uint" summary="the serial of the user event"/>

the client side code can just past the serial of the last input event or 0. and
the exo code can just ignore it for now but it allows us to implement focus
stealing prevention in the near future without having to update the interface.

[khmel, 2016/08/02 02:21:53]

Thanks David for offline chat, done

+      <description summary="make the surface active">
+	Make the surface active and bring it to the front.
+      </description>
+    </request>
   </interface>
 
   <!-- Version 6 additions -->