Integrate UI with authentication flow.

blimp/client/app/android/javatests/src/org/chromium/blimp/core/settings/MockPreferences.java

 // 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.
 
 package org.chromium.blimp.core.settings;
 
 import android.app.Activity;
 import android.app.FragmentManager;
 import android.os.Bundle;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceScreen;
 
 /**
  * Activity to hold {@link MockMainPreferences}.
  */
 public class MockPreferences extends Activity {
 
     public static final String FRAGMENT_TAG = "TestMainPref";
 
-    // Mock {@link MainPreferences} in Clank, this is a PreferenceFragment that holds a list of
-    // sub preferences items, including AboutBlimpPreferences.
-    static class MockMainPreferences extends PreferenceFragment {
+    /** Mock {@link MainPreferences} in Clank, this is a PreferenceFragment that holds a list of
+     * sub preferences items, including AboutBlimpPreferences.
+     */
+    @SuppressWarnings("javadoc")
+    public static class MockMainPreferences extends PreferenceFragment {
         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
 
             // Create a PreferenceScreen in runtime, since the mock class don't load any XML
             // resource.
             PreferenceScreen screen = getPreferenceManager().createPreferenceScreen(getActivity());
             setPreferenceScreen(screen);
         }
     }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         // Attach the {@link MockMainPreferences} to this activity.
         FragmentManager manager = getFragmentManager();
         manager.beginTransaction().add(new MockMainPreferences(), FRAGMENT_TAG)
             .commitAllowingStateLoss();
         manager.executePendingTransactions();
     }
 
     public PreferenceFragment getMainFragment() {
         return (PreferenceFragment) getFragmentManager().findFragmentByTag(FRAGMENT_TAG);
     }
 }