Android: turn on auto-detect encoding by default

chrome/android/java/res/xml/translate_preferences.xml

Index: chrome/android/java/res/xml/translate_preferences.xml
diff --git a/chrome/android/java/res/xml/contextual_search_preferences.xml b/chrome/android/java/res/xml/translate_preferences.xml
similarity index 63%
copy from chrome/android/java/res/xml/contextual_search_preferences.xml
copy to chrome/android/java/res/xml/translate_preferences.xml
index 2478b1c27cb122f3ff152cfa0620851d9f459157..76fa526b6e8578e871609b0aa6c3aac347991a18 100644
--- a/chrome/android/java/res/xml/contextual_search_preferences.xml
+++ b/chrome/android/java/res/xml/translate_preferences.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright 2015 The Chromium Authors. All rights reserved.
+<!-- 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. -->
 
@@ -8,12 +8,16 @@
     xmlns:chrome="http://schemas.android.com/apk/res-auto">
 
     <org.chromium.chrome.browser.preferences.ChromeSwitchPreference
-        android:key="contextual_search_switch"
+        android:key="translate_switch"
         android:summaryOn="@string/text_on"
         android:summaryOff="@string/text_off"
         chrome:drawDivider="true" />
 
     <org.chromium.chrome.browser.preferences.TextMessagePreference
-        android:title="@string/contextual_search_description" />
+        android:title="@string/translate_prefs_description" />
+
+    <org.chromium.chrome.browser.preferences.ButtonPreference
+        android:key="reset_translate_button"
+        android:title="@string/reset_translate_defaults" />
 
 </PreferenceScreen>