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

@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 
+import buildconfig
+
+
 services = []
 
 
@@ -56,6 +59,10 @@ service('Bits', 'nsIBits',
 service('AppInfoService', 'nsIXULRuntime',
         "@mozilla.org/xre/app-info;1")
 
+if buildconfig.substs.get('ENABLE_REMOTE_AGENT'):
+    service('RemoteAgent', 'nsIRemoteAgent',
+            "@mozilla.org/remote/agent;1")
+
 # The definition file needs access to the definitions of the particular
 # interfaces. If you add a new interface here, make sure the necessary includes
 # are also listed in the following code snippet.
@@ -91,6 +98,10 @@ CPP_INCLUDES = """
 #include "nsIXULRuntime.h"
 """
 
+if buildconfig.substs.get('ENABLE_REMOTE_AGENT'):
+    CPP_INCLUDES += '#include "nsIRemoteAgent.h"'
+
+
 #####
 # Codegen Logic
 #