From 8bedcbc2ba9a0a609d1170d06967ceaa495312f2 Mon Sep 17 00:00:00 2001
From: "J. Ryan Stinnett" <jryans@gmail.com>
Date: Fri, 26 Sep 2014 09:35:00 +0200
Subject: [PATCH] Bug 1073522 - Better error when front has no actor. r=dcamp

---
 toolkit/devtools/server/protocol.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/toolkit/devtools/server/protocol.js b/toolkit/devtools/server/protocol.js
index 4b7631f69003..b9e9f9b7f661 100644
--- a/toolkit/devtools/server/protocol.js
+++ b/toolkit/devtools/server/protocol.js
@@ -1061,6 +1061,14 @@ let Front = Class({
     this.actorID = null;
   },
 
+  manage: function(front) {
+    if (!front.actorID) {
+      throw new Error("Can't manage front without an actor ID.\n" +
+                      "Ensure server supports " + front.typeName + ".");
+    }
+    return Pool.prototype.manage.call(this, front);
+  },
+
   /**
    * @returns a promise that will resolve to the actorID this front
    * represents.