Add badge to web notifications.

chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationUIManager.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.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
@@ skipping 418 matching lines @@
      * @param incognito if the session of the profile is an off the record one.
      * @param tag A string identifier for this notification. If the tag is not empty, the new
      *            notification will replace the previous notification with the same tag and origin,
      *            if present. If no matching previous notification is present, the new one will just
      *            be added.
      * @param title Title to be displayed in the notification.
      * @param body Message to be displayed in the notification. Will be trimmed to one line of
      *             text by the Android notification system.
      * @param icon Icon to be displayed in the notification. Valid Bitmap icons will be scaled to
      *             the platforms, whereas a default icon will be generated for invalid Bitmaps.
+     * @param smallIcon Icon to represent the notification in places where there is not enough space
+     *                  to display the whole notification. It may also be displayed inside the

[Peter Beverloo, 2016/03/03 17:55:38]

Let's explicitly call out the status bar?

[Michael van Ouwerkerk, 2016/03/09 18:28:25]

Right, we're in Android code here.

+     *                  notification.
      * @param vibrationPattern Vibration pattern following the Web Vibration syntax.
      * @param timestamp The timestamp of the event for which the notification is being shown.
      * @param renotify Whether the sound, vibration, and lights should be replayed if the
      *                 notification is replacing another notification.
      * @param silent Whether the default sound, vibration and lights should be suppressed.
      * @param actionTitles Titles of actions to display alongside the notification.
      * @param actionIcons Icons of actions to display alongside the notification.
      * @see https://developer.android.com/reference/android/app/Notification.html
      */
     @CalledByNative
     private void displayNotification(long persistentNotificationId, String origin, String profileId,
-            boolean incognito, String tag, String title, String body, Bitmap icon,
+            boolean incognito, String tag, String title, String body, Bitmap icon, Bitmap smallIcon,
             int[] vibrationPattern, long timestamp, boolean renotify, boolean silent,
             String[] actionTitles, Bitmap[] actionIcons) {
         if (actionTitles.length != actionIcons.length) {
             throw new IllegalArgumentException("The number of action titles and icons must match.");
         }
 
         Resources res = mAppContext.getResources();
 
         // Record whether it's known whether notifications can be shown to the user at all.
         RecordHistogram.recordEnumeratedHistogram(
@@ skipping 18 matching lines @@
         PendingIntent closeIntent = makePendingIntent(
                 NotificationConstants.ACTION_CLOSE_NOTIFICATION, persistentNotificationId, origin,
                 profileId, incognito, tag, -1 /* actionIndex */);
 
         NotificationBuilderBase notificationBuilder =
                 createNotificationBuilder()
                         .setTitle(title)
                         .setBody(body)
                         .setLargeIcon(ensureNormalizedIcon(icon, origin))
                         .setSmallIcon(R.drawable.ic_chrome)
+                        .setSmallIcon(smallIcon)
                         .setContentIntent(clickIntent)
                         .setDeleteIntent(closeIntent)
                         .setTicker(createTickerText(title, body))
                         .setTimestamp(timestamp)
                         .setRenotify(renotify)
                         .setOrigin(UrlUtilities.formatUrlForSecurityDisplay(
                                 origin, false /* showScheme */));
 
         for (int actionIndex = 0; actionIndex < actionTitles.length; actionIndex++) {
             notificationBuilder.addAction(actionIcons[actionIndex], actionTitles[actionIndex],
@@ skipping 179 matching lines @@
 
     private static native void nativeInitializeNotificationUIManager();
 
     private native void nativeOnNotificationClicked(long nativeNotificationUIManagerAndroid,
             long persistentNotificationId, String origin, String profileId, boolean incognito,
             String tag, int actionIndex);
     private native void nativeOnNotificationClosed(long nativeNotificationUIManagerAndroid,
             long persistentNotificationId, String origin, String profileId, boolean incognito,
             String tag, boolean byUser);
 }