Use diff-old for embedded gr-diff

Release-Notes: skip
Change-Id: I8321cd7cd4e522cab5634c17dcd2ff16df0d351b
diff --git a/polygerrit-ui/app/embed/gr-diff.ts b/polygerrit-ui/app/embed/gr-diff.ts
index 977f8a9..77d547f 100644
--- a/polygerrit-ui/app/embed/gr-diff.ts
+++ b/polygerrit-ui/app/embed/gr-diff.ts
@@ -15,8 +15,8 @@
 import './diff/gr-diff/gr-diff';
 import './diff/gr-diff-cursor/gr-diff-cursor';
 import {TokenHighlightLayer} from './diff/gr-diff-builder/token-highlight-layer';
-import {GrDiffCursor} from './diff/gr-diff-cursor/gr-diff-cursor';
-import {GrAnnotation} from './diff/gr-diff-highlight/gr-annotation';
+import {GrDiffCursor} from './diff-old/gr-diff-cursor/gr-diff-cursor';
+import {GrAnnotation} from './diff-old/gr-diff-highlight/gr-annotation';
 import {createDiffAppContext} from './gr-diff-app-context-init';
 import {injectAppContext} from '../services/app-context';