Add "Site Settings" option to Clear Browsing Data on Android

chrome/android/java/res/xml/clear_browsing_data_preferences.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. -->
 
 <PreferenceScreen
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto">
 
     <org.chromium.chrome.browser.preferences.SpinnerPreference
@@ skipping 20 matching lines @@
     <org.chromium.chrome.browser.preferences.ClearBrowsingDataCheckBoxPreference
         android:key="clear_passwords_checkbox"
         android:persistent="false"
         android:title="@string/clear_passwords_title" />
 
     <org.chromium.chrome.browser.preferences.ClearBrowsingDataCheckBoxPreference
         android:key="clear_form_data_checkbox"
         android:persistent="false"
         android:title="@string/clear_form_data_title" />
 
+    <org.chromium.chrome.browser.preferences.ClearBrowsingDataCheckBoxPreference
+        android:key="clear_site_settings_checkbox"
+        android:persistent="false"
+        android:title="@string/prefs_site_settings" />
+
     <org.chromium.chrome.browser.preferences.ButtonPreference
         android:key="clear_button"
         android:title="@string/clear_data_delete" />
 
     <Preference android:layout="@layout/divider_preference" />
 
     <org.chromium.chrome.browser.preferences.TextMessageWithLinkAndIconPreference
         android:key="google_summary"
         android:summary="@string/clear_browsing_data_footnote_signed"
         android:icon="@drawable/googleg"
         chrome:noBottomSpacing="true" />
 
     <org.chromium.chrome.browser.preferences.TextMessageWithLinkAndIconPreference
         android:key="general_summary"
         android:icon="@drawable/ic_info_grey" />
 
 </PreferenceScreen>