Bug 1572414 - Fix hasNativeConsoleAPI when dealing with Sandboxes. r=yulia.

When the console parent actor is a ContentProcessTargetActor, we don't have
a reference to a `nsIDOMWindow`, but only to a Sandbox.
The code in `hasNativeConsoleAPI` would then silently fail when trying to
access `window.wrappedJSObject`, and keep `isNative` as `false`.
For now, we work around this by always returning true if we don't have
access to a `nsIDOMWindow`.

Differential Revision: https://phabricator.services.mozilla.com/D42506

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

devtools/server/actors/webconsole.js

@@ -415,8 +415,8 @@ const WebConsoleActor = ActorClassWithSpec(webconsoleSpec, {
   },
 
   hasNativeConsoleAPI: function(window) {
-    if (isWorker) {
-      // Can't use XPCNativeWrapper as a way to check for console API in workers
+    if (isWorker || !(window instanceof Ci.nsIDOMWindow)) {
+      // We can only use XPCNativeWrapper on non-worker nsIDOMWindow.
       return true;
     }