NTP, change the card elevation from setElevation to a 9 patch file

chrome/android/java/res/layout/new_tab_page_status_card.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2016 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
 <LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto"
     android:id="@+id/status_card_view"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:gravity="end"
     android:orientation="vertical"
     android:padding="@dimen/snippets_padding_and_peeking_card_height"
-    android:background="@color/snippets_background_color">
+    android:background="@drawable/ntp_card">
 
     <org.chromium.ui.widget.TextViewWithLeading
         android:id="@+id/status_title"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:textSize="16sp"
         android:textColor="@color/snippets_headline_text_color"
         chrome:leading="24dp" />
 
     <org.chromium.ui.widget.TextViewWithLeading
@@ skipping 13 matching lines @@
       style="@style/ButtonCompatBorderless"
       android:layout_marginTop="16dp"
       android:layout_marginEnd="-8dp"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:textAllCaps="true"
       android:textColor="@color/light_active_color"
       android:textSize="15sp" />
 
 </LinearLayout>