Get rid of some global variables - Part 1

* Replace the following global variables with named imports:
  - GrChangeReplyInterface
  - GrEditConstants
  - GrFileListConstants
* Update gr-app-global-var-init.js

Change-Id: I8f19739784789d1f26b893b9faab9d6a279bfc60

polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js

diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js
index dfb378e..63f9471 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js
@@ -21,7 +21,6 @@
 import '../../core/gr-navigation/gr-navigation.js';
 import '../../core/gr-reporting/gr-reporting.js';
 import '../../diff/gr-comment-api/gr-comment-api.js';
-import '../../edit/gr-edit-constants.js';
 import '../../plugins/gr-endpoint-decorator/gr-endpoint-decorator.js';
 import '../../plugins/gr-endpoint-param/gr-endpoint-param.js';
 import '../../shared/gr-account-link/gr-account-link.js';
@@ -60,6 +59,7 @@
 import {PatchSetBehavior} from '../../../behaviors/gr-patch-set-behavior/gr-patch-set-behavior.js';
 import {KeyboardShortcutBehavior} from '../../../behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior.js';
 import {RESTClientBehavior} from '../../../behaviors/rest-client-behavior/rest-client-behavior.js';
+import {GrEditConstants} from '../../edit/gr-edit-constants.js';
 
 import {PrimaryTabs, SecondaryTabs} from '../../../constants/constants.js';
 import {NO_ROBOT_COMMENTS_THREADS_MSG} from '../../../constants/messages.js';

polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html

diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html
index 1c82e5e..40528ff 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html
@@ -45,6 +45,8 @@
 
 import {dom} from '@polymer/polymer/lib/legacy/polymer.dom.js';
 import {KeyboardShortcutBinder} from '../../../behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior.js';
+import {GrEditConstants} from '../../edit/gr-edit-constants.js';
+
 suite('gr-change-view tests', () => {
   const kb = KeyboardShortcutBinder;
   kb.bindShortcut(kb.Shortcut.SEND_REPLY, 'ctrl+enter');