Underlines for preference spinners and other autofill tweaks

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

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2014 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. -->
 
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fillViewport="true" >
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
         android:focusableInTouchMode="true" >
 
         <LinearLayout
             style="@style/PreferenceScreenLayout"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:orientation="vertical">
+            android:orientation="vertical" >
 
             <!-- Editable fields for the profile -->
-            <TextView
+            <LinearLayout
                 android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:focusable="true"
-                android:textAppearance="@style/PreferenceFloatLabelTextAppearance"
-                android:text="@string/autofill_profile_editor_country" />
-            <Spinner
-                android:id="@+id/countries"
-                android:layout_width="fill_parent"
-                android:layout_height="wrap_content" />
+                android:layout_height="match_parent"
+                android:orientation="vertical"
+                android:layout_marginStart="@dimen/pref_autofill_field_horizontal_padding"
+                android:layout_marginEnd="@dimen/pref_autofill_field_horizontal_padding"
+                android:paddingBottom="5dp" >
+                <TextView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:focusable="true"
+                    android:textAppearance="@style/PreferenceFloatLabelTextAppearance"
+                    android:text="@string/autofill_profile_editor_country"
+                    android:paddingBottom="8dp" />
+                <Spinner
+                    android:id="@+id/countries"
+                    android:layout_width="fill_parent"
+                    android:layout_height="wrap_content" />
+                <View style="@style/PreferenceSpinnerUnderlineView" />
+            </LinearLayout>
 
             <LinearLayout
                 android:id="@+id/autofill_profile_widget_root"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:orientation="vertical" >
             </LinearLayout>
 
             <org.chromium.chrome.browser.widget.FloatLabelLayout
                 android:id="@+id/phone_number_label"
@@ skipping 42 matching lines @@
                 android:text="@string/cancel" />
 
             <Button
                 android:id="@+id/autofill_profile_save"
                 style="@style/ButtonBarButton"
                 android:text="@string/save" />
         </LinearLayout>
     </LinearLayout>
 
 </ScrollView>