Revert of New UMA settings fragment using Android prefs.

chrome/android/java/res/xml/privacy_preferences.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. -->
 
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
     <org.chromium.chrome.browser.preferences.ChromeBaseCheckBoxPreference
         android:key="navigation_error"
         android:title="@string/navigation_error_title"
         android:summary="@string/navigation_error_summary"
@@ skipping 27 matching lines @@
     <org.chromium.chrome.browser.preferences.privacy.CrashDumpUploadPreference
         android:key="crash_dump_upload"
         android:title="@string/crash_dump_upload_title"
         android:entries="@array/crash_upload_entries"
         android:entryValues="@array/crash_upload_values"
         android:defaultValue="@string/crash_dump_never_upload_value" />
     <org.chromium.chrome.browser.preferences.ChromeBaseCheckBoxPreference
         android:key="crash_dump_upload_no_cellular"
         android:title="@string/crash_dump_upload_title"
         android:defaultValue="false" />
-    <Preference
-        android:key="usage_and_crash_reports"
-        android:title="@string/usage_and_crash_reports_title"
-        android:fragment="org.chromium.chrome.browser.preferences.privacy.UsageAndCrashReportsPreferenceFragment" />
 
     <Preference
         android:fragment="org.chromium.chrome.browser.preferences.privacy.DoNotTrackPreference"
         android:key="do_not_track"
         android:title="@string/do_not_track_title" />
     <org.chromium.chrome.browser.preferences.ButtonPreference
         android:key="clear_browsing_data"
         android:title="@string/clear_browsing_data_title" />
 </PreferenceScreen>