Better error messages

Author: janodvarko

lib/har-driver-actor.js

@@ -276,7 +276,12 @@ function ExportDriverApi(actor) {
  function securityCheck(method) {
     return function(options) {
       if (options.token != actor.token) {
-        return win.Promise.reject(new win.Error("Wrong token"));
+        let pref = "devtools.netmonitor.har.contentAPIToken";
+        let msg = "Security check didn't pass. You need to set '" +
+          pref + "' pref to match the string token passed into " +
+          "HAR object API call (browser restart is required)";
+        Cu.reportError(msg);
+        return win.Promise.reject(new win.Error(msg));
       }
 
       try {

lib/trigger-toolbox-overlay.js

@@ -139,7 +139,8 @@ const TriggerToolboxOverlay = Class(
     // Platform support is needed here.
     // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1184889
     if (typeof getHarOverlay != "function") {
-      Cu.reportError("Platform support needed, see Bug 1184889");
+      Cu.reportError("Platform support needed, see Bug: " +
+        "https://bugzilla.mozilla.org/show_bug.cgi?id=1184889");
       return;
     }