Reformat Comment to HumanComment

This is part of a larger change I45924cb3f8 that renamed Comment to
HumanComment.

Change-Id: Ida9fa514978beb2c02f83641345d6cfa2de4719a

src/main/java/com/googlesource/gerrit/plugins/multisite/index/ChangeCheckerImpl.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/multisite/index/ChangeCheckerImpl.java b/src/main/java/com/googlesource/gerrit/plugins/multisite/index/ChangeCheckerImpl.java
index 32b8af3..cbdb936 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/multisite/index/ChangeCheckerImpl.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/multisite/index/ChangeCheckerImpl.java
@@ -15,7 +15,7 @@
 package com.googlesource.gerrit.plugins.multisite.index;
 
 import com.google.gerrit.entities.Change;
-import com.google.gerrit.entities.Comment;
+import com.google.gerrit.entities.HumanComment;
 import com.google.gerrit.exceptions.StorageException;
 import com.google.gerrit.server.CommentsUtil;
 import com.google.gerrit.server.change.ChangeFinder;
@@ -148,7 +148,7 @@
     Change change = notes.getChange();
     Timestamp changeTs = change.getLastUpdatedOn();
     try {
-      for (Comment comment : commentsUtil.draftByChange(changeNotes.get())) {
+      for (HumanComment comment : commentsUtil.draftByChange(changeNotes.get())) {
         Timestamp commentTs = comment.writtenOn;
         changeTs = commentTs.after(changeTs) ? commentTs : changeTs;
       }