Merge pull request #841 from snewcomer/sn/no-deprecation-implicit

Avoid implicit injection _fastbootInfo deprecation

Author: xg-wang

packages/ember-cli-fastboot/addon/services/fastboot.js

@@ -1,4 +1,5 @@
 /* global FastBoot */
+import { getOwner } from '@ember/application';
 import { computed, get } from '@ember/object';
 import { readOnly } from '@ember/object/computed';
 import { assert } from '@ember/debug';
@@ -88,6 +89,11 @@ const FastBootService = Service.extend({
     return RequestObject.create({ request: get(this, '_fastbootInfo.request') });
   }),
 
+  _fastbootInfo: computed(function() {
+    // this getter is to avoid deprecation from [RFC - 680](https://github.com/emberjs/rfcs/pull/680)
+    return getOwner(this).lookup('info:-fastboot');
+  }),
+
   deferRendering(promise) {
     assert('deferRendering requires a promise or thennable object', typeof promise.then === 'function');
     this._fastbootInfo.deferRendering(promise);