Added permissions to call {Get|Set}Channel.

Added permissions to call {Get|Set}Channel.

BUG=chromium:219292
TEST=none

Change-Id: Ie23109602d2981f05f9508cc147b3b47b3df13a3
Reviewed-on: https://gerrit.chromium.org/gerrit/59422
Reviewed-by: Chris Sosa <sosa@chromium.org>
Tested-by: Yuri Gorshenin <ygorshenin@chromium.org>
Reviewed-by: Yuri Gorshenin <ygorshenin@chromium.org>
Commit-Queue: Yuri Gorshenin <ygorshenin@chromium.org>
diff --git a/UpdateEngine.conf b/UpdateEngine.conf
index c83d6f2..9707402 100644
--- a/UpdateEngine.conf
+++ b/UpdateEngine.conf
@@ -34,6 +34,12 @@
     <allow send_destination="org.chromium.UpdateEngine"
            send_interface="org.chromium.UpdateEngineInterface"
            send_member="SetTrack"/>
+    <allow send_destination="org.chromium.UpdateEngine"
+           send_interface="org.chromium.UpdateEngineInterface"
+           send_member="SetChannel"/>
+    <allow send_destination="org.chromium.UpdateEngine"
+           send_interface="org.chromium.UpdateEngineInterface"
+           send_member="GetChannel"/>
     <allow send_interface="org.chromium.UpdateEngineLibcrosProxyResolvedInterface" />
   </policy>
   <policy context="default">