DataUse UI strings should be changeable via Finch

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

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2015 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"
     android:layout_height="wrap_content"
     android:layout_width="match_parent"
     android:orientation="vertical"
     android:paddingBottom="16dp"
     android:paddingStart="16dp"
     android:paddingTop="16dp" >
-    
+
     <TextView
+        android:id="@+id/data_use_message"
         android:layout_height="wrap_content"
         android:layout_width="match_parent"
         android:layout_marginBottom="16dp"
         android:layout_marginStart="8dp"
-        android:text="@string/data_use_tracking_ended_message"
         android:textColor="@color/light_normal_color"
         android:textSize="16sp" />
-    
+
     <TextView
         android:id="@+id/learn_more"
         android:layout_height="wrap_content"
-        android:layout_width="match_parent" 
+        android:layout_width="match_parent"
         android:clickable="true"
         android:layout_marginBottom="16dp"
         android:layout_marginStart="8dp"
         android:text="@string/learn_more"
         android:textColor="@color/light_active_color"
         android:textSize="16sp" />
 
     <CheckBox
         android:id="@+id/data_use_checkbox"
         android:layout_height="wrap_content"
         android:layout_width="match_parent"
-        android:text="@string/data_use_tracking_ended_checkbox_message"
         android:textColor="@color/light_normal_color"
         android:textSize="16sp" />
 
-</LinearLayout>
+</LinearLayout>