[Feed] Switch feature that delay param is read from.

Bug: 997716
Change-Id: I1fbeeba09a9143c7e8029e5f102b6ea004947999
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1769515Reviewed-by: Carlos Knippschild <carlosk@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Sky Malice <skym@chromium.org>
Cr-Commit-Position: refs/heads/master@{#692277}

chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java

@@ -113,8 +113,7 @@ public class NewTabPageAdapter extends Adapter<NewTabPageViewHolder>
         mFooter = new Footer();
 
         int sectionDelay = ChromeFeatureList.getFieldTrialParamByFeatureAsInt(
-                ChromeFeatureList.INTEREST_FEED_CONTENT_SUGGESTIONS,
-                "artificial_legacy_ntp_delay_ms", 0);
+                ChromeFeatureList.NTP_ARTICLE_SUGGESTIONS, "artificial_legacy_ntp_delay_ms", 0);
         Runnable addSectionAndFooter = () -> {
             mRoot.addChildren(mSections);
             mRoot.addChildren(mFooter);