[Home] Add a Chrome Home specific incognito NTP

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

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2017 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. -->
 
 <FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:focusable="true"
     android:focusableInTouchMode="true"
     android:background="@android:color/white" >
 
     <org.chromium.chrome.browser.widget.TintedImageButton
         android:id="@+id/close_button"
         android:layout_width="40dp"
         android:layout_height="40dp"
-        android:layout_gravity="top|start"
+        android:layout_gravity="top|end"
         android:src="@drawable/btn_close"
         android:scaleType="center"
         android:background="@android:color/transparent"
         chrome:tint="@color/dark_mode_tint" />
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:orientation="vertical" >
+        android:orientation="vertical"
+        android:clipChildren="false" >
 
         <FrameLayout
             android:layout_width="match_parent"
             android:layout_height="0dp"
             android:layout_weight="0.5" >
 
             <org.chromium.chrome.browser.ntp.LogoView
                 android:id="@+id/search_provider_logo"
                 android:layout_width="match_parent"
                 android:layout_height="@dimen/ntp_logo_height"
                 android:layout_marginStart="16dp"
                 android:layout_marginEnd="16dp"
                 android:layout_gravity="center" />
 
         </FrameLayout>
 
-        <!-- This extra empty frame layout is used to ensure the FrameLayout above
-             is half of the parent view's height.  -->
+        <!-- This extra empty frame layout is used to ensure the FrameLayout
+             above is half of the parent view's height.  -->
         <FrameLayout
             android:layout_width="match_parent"
             android:layout_height="0dp"
             android:layout_weight="0.5"
-            android:background="@android:color/white" />
+            android:background="@android:color/transparent" />
 
     </LinearLayout>
 
 </FrameLayout>