Bug 1409629 - Add eBay to internal default list. r=flod

MozReview-Commit-ID: D0hIxS820ZV

--HG--
extra : rebase_source : b10272f2c43a26447dd41cc5feb57d7fe039559c

browser/locales/search/list.json

@@ -1,7 +1,7 @@
 {
   "default": {
     "visibleDefaultEngines": [
-      "google", "yahoo", "amazondotcom", "bing", "ddg", "twitter", "wikipedia"
+      "google", "yahoo", "amazondotcom", "bing", "ddg", "ebay", "twitter", "wikipedia"
     ]
   },
   "regionOverrides": {