Minor card tweaks for leanback demo.

- Set card size to 160x100
- Show 10 rows

Change-Id: I440eef119250d3385ce5d367ec231bfe7c0201b4
diff --git a/samples/SupportLeanbackDemos/res/drawable/text_bg.xml b/samples/SupportLeanbackDemos/res/drawable/text_bg.xml
index c67924c..2f5a213 100644
--- a/samples/SupportLeanbackDemos/res/drawable/text_bg.xml
+++ b/samples/SupportLeanbackDemos/res/drawable/text_bg.xml
@@ -26,4 +26,7 @@
         android:top="7dp"
         android:right="7dp"
         android:bottom="7dp" />
+    <size
+        android:height="160dp"
+        android:width="100dp" />
 </shape>
diff --git a/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java b/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java
index 2345ed0..247af72 100644
--- a/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java
+++ b/samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java
@@ -27,7 +27,7 @@
 public class BrowseFragment extends android.support.v17.leanback.app.BrowseFragment {
     private static final String TAG = "leanback.BrowseFragment";
 
-    private static final int NUM_ROWS = 3;
+    private static final int NUM_ROWS = 10;
     private ArrayObjectAdapter mRowsAdapter;
 
     @Override