Change the long comment threshold from 5 to 10.

Change-Id: Ia091ee1c0426a26c46fcb8dbe614839720f5b787
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-utils.ts b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-utils.ts
index 5edd353..66ac065 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-utils.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-utils.ts
@@ -40,7 +40,7 @@
 }
 
 export function isLongCommentRange(range: CommentRange): boolean {
-  return range.end_line - range.start_line > 5;
+  return range.end_line - range.start_line > 10;
 }
 
 export function getLineNumber(lineEl?: Element | null): LineNumber | null {