bug 1543115: remote: expose nsIRemoteAgent as XPCOM service; r=remote-protocol-reviewers,maja_zf,nika

This change makes it possible to access the remote agent service
from C++ and Rust.

Differential Revision: https://phabricator.services.mozilla.com/D50288

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

remote/nsIRemoteAgent.idl

@@ -42,3 +42,10 @@ interface nsIRemoteAgent : nsISupports
   /** Stops listening and drops existing connections. */
   void close();
 };
+
+%{C++
+#define NS_REMOTEAGENT_CONTRACTID "@mozilla.org/remote/agent;1"
+#define NS_REMOTEAGENT_CID \
+  { 0x8f685a9d, 0x8181, 0x46d6, \
+    { 0xa7, 0x1d, x86, x92, x89, x09, x9c, x6d } }
+%}

xpcom/build/Services.py

@@ -26,6 +26,8 @@ service('PermissionManager', 'nsIPermissionManager',
         "@mozilla.org/permissionmanager;1")
 service('PreferencesService', 'nsIPrefService',
         "@mozilla.org/preferences-service;1")
+service('RemoteAgent', 'nsIRemoteAgent',
+        "@mozilla.org/remote/agent;1")
 service('ServiceWorkerManager', 'nsIServiceWorkerManager',
         "@mozilla.org/serviceworkers/manager;1")
 service('AsyncShutdown', 'nsIAsyncShutdownService',
@@ -77,6 +79,7 @@ CPP_INCLUDES = """
 #include "nsIXPConnect.h"
 #include "nsIPermissionManager.h"
 #include "nsIPrefService.h"
+#include "nsIRemoteAgent.h"
 #include "nsIServiceWorkerManager.h"
 #include "nsICacheStorageService.h"
 #include "nsIStreamTransportService.h"