Allow extension crash notifications to replace each other.

Previously they did not set an origin or replace_id, causing updates
to be turned into adds in the notification UI manager, where it would
DCHECK because the id matched that of an existing notification.

This patch adds a replace_id and origin so that updates can happen
smoothly.

BUG=360591

Review URL: https://codereview.chromium.org/294473002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272006 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/background/background_contents_service.cc

@@ -177,11 +177,11 @@ void NotificationImageReady(
   // TODO(mukai, dewittj): remove this and switch to message center
   // notifications.
   DesktopNotificationService::AddIconNotification(
-      GURL() /* empty origin */,
-      base::string16(),
+      GURL("chrome://extension-crash"),  // Origin URL.
+      base::string16(),                  // Title of notification.
       message,
       notification_icon,
-      base::string16(),
+      base::UTF8ToUTF16(delegate->id()),  // Replace ID.
       delegate.get(),
       profile);
 }

chrome/browser/background/background_contents_service_unittest.cc

@@ -131,8 +131,6 @@ class NotificationWaiter : public message_center::MessageCenterObserver {
     DCHECK(!run_loop_.running());
     message_center::MessageCenter* message_center =
         message_center::MessageCenter::Get();
-    if (message_center->HasNotification(target_id_))
-      return;
 
     message_center->AddObserver(this);
     run_loop_.Run();
@@ -147,6 +145,12 @@ class NotificationWaiter : public message_center::MessageCenterObserver {
       run_loop_.Quit();
   }
 
+  virtual void OnNotificationUpdated(
+      const std::string& notification_id) OVERRIDE {
+    if (notification_id == target_id_)
+      run_loop_.Quit();
+  }
+
   std::string target_id_;
   base::RunLoop run_loop_;
 
@@ -366,4 +370,19 @@ TEST_F(BackgroundContentsServiceNotificationTest, TestShowBalloonNoIcon) {
   const Notification* notification = CreateCrashNotification(extension);
   EXPECT_FALSE(notification->icon().IsEmpty());
 }
+
+TEST_F(BackgroundContentsServiceNotificationTest, TestShowTwoBalloons) {
+  TestingProfile profile;
+  scoped_refptr<extensions::Extension> extension =
+      extension_test_util::LoadManifest("app", "manifest.json");
+  ASSERT_TRUE(extension.get());
+  CreateCrashNotification(extension);
+  CreateCrashNotification(extension);
+
+  message_center::MessageCenter* message_center =
+      message_center::MessageCenter::Get();
+  message_center::NotificationList::Notifications notifications =
+      message_center->GetVisibleNotifications();
+  ASSERT_EQ(1u, notifications.size());
+}
 #endif