[Android] Show notification for opening new tab in background of Browser Actions

chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationConstants.java

 // Copyright 2014 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.notifications;
 
 import android.content.Intent;
 
 /**
  * Constants used in more than a single Notification class, e.g. intents and extra names.
@@ skipping 38 matching lines @@
      * Unique identifier for the "Signed in to Chrome" notification.
      */
     @SuppressWarnings("unused")
     public static final int NOTIFICATION_ID_SIGNED_IN = 2;
     /**
      * Unique identifier for the Physical Web notification.
      */
     public static final int NOTIFICATION_ID_PHYSICAL_WEB = 3;
 
     /**
+     * Unique identifier for Browser Actions notification.
+     */
+    public static final int NOTIFICATION_ID_BROWSER_ACTIONS = 4;
+
+    /**
      * Unique identifier for the summary notification for downloads.  Using the ID this summary was
      * going to have before it was migrated here.
      * TODO(dtrainor): Clean up this ID and make sure it's in line with existing id counters without
      * tags.
      */
     public static final int NOTIFICATION_ID_DOWNLOAD_SUMMARY = 999999;
 
     /**
      * Separator used to separate the notification origin from additional data such as the
      * developer specified tag.
@@ skipping 11 matching lines @@
     public static final String GROUP_MEDIA_PLAYBACK = "MediaPlayback";
     public static final String GROUP_MEDIA_PRESENTATION = "MediaPresentation";
     public static final String GROUP_MEDIA_REMOTE = "MediaRemote";
     public static final String GROUP_SYNC = "Sync";
 
     // Web notification group names are set dynamically as this prefix + notification origin.
     // For example, 'Web:chromium.org' for a notification from chromium.org.
     static final String GROUP_WEB_PREFIX = "Web:";
 
 }