Integrate the notification database with the normal code path.

chrome/browser/notifications/platform_notification_service_unittest.cc

Index: chrome/browser/notifications/platform_notification_service_unittest.cc
diff --git a/chrome/browser/notifications/platform_notification_service_unittest.cc b/chrome/browser/notifications/platform_notification_service_unittest.cc
index 2bd06aae249565bb910708c4b3bfe572f88d79a6..0650fda6ec7b36a235fd1431e3854de30d416282 100644
--- a/chrome/browser/notifications/platform_notification_service_unittest.cc
+++ b/chrome/browser/notifications/platform_notification_service_unittest.cc
@@ -17,6 +17,8 @@
 
 namespace {
 
+const int64_t kPersistentNotificationId = 42;
+
 class MockDesktopNotificationDelegate
     : public content::DesktopNotificationDelegate {
  public:
@@ -132,7 +134,7 @@ TEST_F(PlatformNotificationServiceTest, PersistentNotificationDisplay) {
   notification_data.body = base::ASCIIToUTF16("Hello, world!");
 
   service()->DisplayPersistentNotification(
-      profile(), 42 /* sw_registration_id */, GURL("https://chrome.com/"),
+      profile(), kPersistentNotificationId, GURL("https://chrome.com/"),
       SkBitmap(), notification_data);
 
   ASSERT_EQ(1u, ui_manager()->GetNotificationCount());
@@ -144,8 +146,7 @@ TEST_F(PlatformNotificationServiceTest, PersistentNotificationDisplay) {
   EXPECT_EQ("Hello, world!",
       base::UTF16ToUTF8(notification.message()));
 
-  service()->ClosePersistentNotification(profile(),
-                                         notification.delegate_id());
+  service()->ClosePersistentNotification(profile(), kPersistentNotificationId);
   EXPECT_EQ(0u, ui_manager()->GetNotificationCount());
 }