Implement support for silent notifications.

chrome/android/javatests/src/org/chromium/chrome/browser/notifications/NotificationUIManagerTest.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.notifications;
 
 import android.app.Notification;
 import android.os.Build;
 import android.test.suitebuilder.annotation.MediumTest;
 import android.util.SparseArray;
@@ skipping 130 matching lines @@
             assertEquals("android.app.Notification$BigTextStyle",
                     notification.extras.getString(Notification.EXTRA_TEMPLATE));
         }
 
         // Validate the notification's behavior.
         assertEquals(Notification.DEFAULT_ALL, notification.defaults);
         assertEquals(Notification.PRIORITY_DEFAULT, notification.priority);
     }
 
     /**
+     * Verifies that notifications created with the "silent" flag do not inherit system defaults
+     * in regards to their sound, vibration and light indicators.
+     */
+    @MediumTest
+    @Feature({"Browser", "Notifications"})
+    public void testNotificationSilentProperty() throws Exception {
+        setNotificationContentSettingForCurrentOrigin(ContentSetting.ALLOW);
+        assertEquals(PERMISSION_GRANTED, runJavaScriptCodeInCurrentTab("Notification.permission"));
+
+        Notification notification = showAndGetNotification("MyNotification", "{ silent: true }");
+        assertNotNull(notification);
+
+        // Zero indicates that no defaults should be inherited from the system.
+        assertEquals(0, notification.defaults);
+    }
+
+    /**
      * Verifies that notifications which specify an icon will have that icon fetched, converted into
      * a Bitmap and included as the large icon in the notification.
      */
     @MediumTest
     @Feature({"Browser", "Notifications"})
     public void testShowNotificationWithIcon() throws Exception {
         setNotificationContentSettingForCurrentOrigin(ContentSetting.ALLOW);
         assertEquals(PERMISSION_GRANTED, runJavaScriptCodeInCurrentTab("Notification.permission"));
 
         Notification notification = showAndGetNotification("MyNotification", "{icon: 'icon.png'}");
         assertNotNull(notification);
 
         assertEquals("MyNotification", notification.extras.getString(Notification.EXTRA_TITLE));
         assertNotNull(notification.largeIcon);
 
         // These are the dimensions of //chrome/test/data/notifications/icon.png at 1x scale.
         assertEquals(100, notification.largeIcon.getWidth());
         assertEquals(100, notification.largeIcon.getHeight());
     }
 }