📰 Show the Sign In promo as a separate card from the section

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageItem.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageItem.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageItem.java
index a8ecb2eddeab47aa51801ec7f14acd0debca31ca..74d38834b1d905d3c2a5893fa73c3a7e57c00cbd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageItem.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageItem.java
@@ -18,7 +18,7 @@
      * @see NewTabPageItem#getType()
      */
     @IntDef({VIEW_TYPE_ABOVE_THE_FOLD, VIEW_TYPE_HEADER, VIEW_TYPE_SNIPPET, VIEW_TYPE_SPACING,
-            VIEW_TYPE_STATUS, VIEW_TYPE_PROGRESS, VIEW_TYPE_ACTION})
+            VIEW_TYPE_STATUS, VIEW_TYPE_PROGRESS, VIEW_TYPE_ACTION, VIEW_TYPE_PROMO})
     @Retention(RetentionPolicy.SOURCE)
     public @interface ViewType {}
 
@@ -71,6 +71,12 @@
     public static final int VIEW_TYPE_FOOTER = 8;
 
     /**
+     * View type for a {@link SigninPromoItem}.
+     * @see Adapter#getItemViewType(int)
+     */
+    public static final int VIEW_TYPE_PROMO = 9;
+
+    /**
       * Returns the type ({@link ViewType}) of this list item. This is so we can
       * distinguish between different elements that are held in a single RecyclerView holder.
       *