Tests for notification preferences intents fired by the Android system.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationUIManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationUIManager.java b/chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationUIManager.java
index fa3a8315e4eb5454d1c699de92855984ed831603..f4338ea1de237dcc3367739964fa54caa31c0a86 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationUIManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/notifications/NotificationUIManager.java
@@ -226,7 +226,7 @@ public static void launchNotificationPreferences(Context context, Intent incomin
             return;
         }
 
-        // Use the application context because it lives longer. When using he given context, it
+        // Use the application context because it lives longer. When using the given context, it
         // may be stopped before the preferences intent is handled.
         Context applicationContext = context.getApplicationContext();
 
@@ -328,8 +328,9 @@ private PendingIntent makePendingIntent(String action, long persistentNotificati
      * @param tag A string identifier for this notification.
      * @return The generated platform tag.
      */
-    private static String makePlatformTag(long persistentNotificationId, String origin,
-                                          @Nullable String tag) {
+    @VisibleForTesting
+    static String makePlatformTag(
+            long persistentNotificationId, String origin, @Nullable String tag) {
         // The given tag may contain the separator character, so add it last to make reading the
         // preceding origin token reliable. If no tag was specified (it is the default empty
         // string), make the platform tag unique by appending the notification id.