Ensure only one live search engine promo.

chrome/android/java/src/org/chromium/chrome/browser/widget/AlwaysDismissedDialog.java

 // 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.
 
 package org.chromium.chrome.browser.widget;
 
 import android.app.Activity;
 import android.app.Dialog;
 
 import org.chromium.base.ActivityState;
 import org.chromium.base.ApplicationStatus;
 
 /**
  * Dialog subclass that ensures that dismiss() is called, even if the dialog is implicitly dismissed
  * due to its activity being destroyed. This is important if the dialog's dismiss() method releases
  * references to memory or performs other crucial cleanup. See http://crbug.com/507748.
  * DialogFragments ensure that dismiss() is called as well.
  */
 public class AlwaysDismissedDialog
         extends Dialog implements ApplicationStatus.ActivityStateListener {
     public AlwaysDismissedDialog(Activity ownerActivity, int theme) {
         super(ownerActivity, theme);
         ApplicationStatus.registerStateListenerForActivity(this, ownerActivity);
+
+        setOwnerActivity(ownerActivity);
     }
 
     @Override
     public void dismiss() {
         super.dismiss();
         ApplicationStatus.unregisterActivityStateListener(this);
     }
 
     @Override
     public void onActivityStateChange(Activity activity, int newState) {
         if (newState == ActivityState.DESTROYED) dismiss();
     }
 }