Add vertical and horizontal dividers for large cards of homepage

- Add a new field in ContextualCard to store whether this card is a large one
- Set dividers for large cards in renderer

Fixes: 119528161
Fixes: 119641839
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.homepage
Change-Id: I5cb95214789f44ccfd8d9ce2177ca2b84835b7a4

src/com/android/settings/homepage/contextualcards/slices/SliceContextualCardRenderer.java

@@ -131,6 +131,12 @@ public class SliceContextualCardRenderer implements ContextualCardRenderer,
         // Set this listener so we can log the interaction users make on the slice
         cardHolder.sliceView.setOnSliceActionListener(this);
 
+        // Customize slice view for Settings
+        if (card.isLargeCard()) {
+            cardHolder.sliceView.showHeaderDivider(true);
+            cardHolder.sliceView.showActionDividers(true);
+        }
+
         initDismissalActions(cardHolder, card);
     }