bug 1542861: browser, toolkit: fix remote agent packaging; r=firefox-build-system-reviewers,mshal

The RemoteAgent.js script has (temporarily) changed name to
remote/command-line-handler.js, and the chrome component remote.jar
was not included during packaging.  This patch fixes both these things.

Differential Revision: https://phabricator.services.mozilla.com/D26591

--HG--
extra : moz-landing-system : lando

browser/installer/package-manifest.in

@@ -189,7 +189,9 @@
 
 ; CDP remote agent
 #ifdef ENABLE_REMOTE_AGENT
-@RESPATH@/components/RemoteAgent.js
+@RESPATH@/chrome/remote@JAREXT@
+@RESPATH@/chrome/remote.manifest
+@RESPATH@/components/command-line-handler.js
 @RESPATH@/components/RemoteAgent.manifest
 @RESPATH@/defaults/pref/remote.js
 #endif

toolkit/moz.configure

@@ -913,12 +913,13 @@ add_old_configure_assignment('FT2_CFLAGS',
                              ft2_info.cflags)
 
 
-# CDP remote agent
+# Remote agent (part of CDP based remote protocol)
 # ==============================================================
 #
+# See https://firefox-source-docs.mozilla.org/remote/ for more.
 # The source code lives under ../remote.
 
-option('--enable-cdp', help='Enable CDP-based remote agent')
+option('--enable-cdp', help='{Enable|Disable} remote agent')
 
 @depends('--enable-cdp')
 def remote(value):
@@ -926,6 +927,7 @@ def remote(value):
         return True
 
 set_config('ENABLE_REMOTE_AGENT', remote)
+set_define('ENABLE_REMOTE_AGENT', remote)
 
 
 # Marionette remote protocol