Bug 1275330 - Fix console.log error in event-emitter.js by importing Console.jsm r=jryans

MozReview-Commit-ID: 1CyZHRhQQs6

--HG--
extra : transplant_source : u%EF%BA%C8%12%89%92%CB%FC%A2%9F%CF%2B%04V%13%87%A0x%E6

devtools/shared/event-emitter.js

@@ -21,6 +21,8 @@
           return Cu.import("resource://gre/modules/Promise.jsm", {}).Promise.defer;
         case "Services":
           return Cu.import("resource://gre/modules/Services.jsm", {}).Services;
+        case "resource://gre/modules/Console.jsm":
+          return Cu.import("resource://gre/modules/Console.jsm", {});
         case "chrome":
           return {
             Cu,
@@ -38,6 +40,7 @@
 
   // See comment in JSM module boilerplate when adding a new dependency.
   const { components } = require("chrome");
+  const { console } = require("resource://gre/modules/Console.jsm");
   const Services = require("Services");
   const defer = require("devtools/shared/defer");
   let loggingEnabled = true;

devtools/shared/tests/mochitest/test_eventemitter_basic.html

@@ -74,10 +74,25 @@
         }
 
         function onlyOnce() {
-          ok(!beenHere2, "\"once\" listner has been called once");
+          ok(!beenHere2, "\"once\" listener has been called once");
           beenHere2 = true;
           emitter.emit("onlyonce");
 
+          testThrowingExceptionInListener();
+        }
+
+        function testThrowingExceptionInListener() {
+          function throwListener() {
+            emitter.off("throw-exception");
+            throw {
+              toString: () => "foo",
+              stack: "bar",
+            };
+          }
+
+          emitter.on("throw-exception", throwListener);
+          emitter.emit("throw-exception");
+
           killItWhileEmitting();
         }