crostini: remove backup and restore cancelled notifications

BUG=993656

Change-Id: I820f71f0063c89bf57c06c08fb1faa94ef9a32f5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1752275
Auto-Submit: Julian Watson <juwa@google.com>
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686735}

chrome/browser/chromeos/crostini/crostini_export_import_notification.cc

@@ -155,17 +155,8 @@ void CrostiniExportImportNotification::SetStatusCancelled() {
 
   status_ = Status::CANCELLED;
 
-  notification_->set_type(message_center::NOTIFICATION_TYPE_SIMPLE);
-  notification_->set_accent_color(ash::kSystemNotificationColorNormal);
-  notification_->set_title(l10n_util::GetStringUTF16(
-      type_ == ExportImportType::EXPORT
-          ? IDS_CROSTINI_EXPORT_NOTIFICATION_TITLE_CANCELLED
-          : IDS_CROSTINI_IMPORT_NOTIFICATION_TITLE_CANCELLED));
-  notification_->set_message({});
-  notification_->set_buttons({});
-  notification_->set_never_timeout(false);
-
-  ForceRedisplay();
+  NotificationDisplayService::GetForProfile(profile_)->Close(
+      NotificationHandler::Type::TRANSIENT, notification_->id());
 }
 
 void CrostiniExportImportNotification::SetStatusFailed() {

chrome/browser/chromeos/crostini/crostini_export_import_unittest.cc

@@ -289,8 +289,8 @@ TEST_F(CrostiniExportImportTest, TestExportCancelled) {
   // CANCELLED:
   SendExportProgress(
       vm_tools::cicerone::ExportLxdContainerProgressSignal_Status_CANCELLED);
-  EXPECT_EQ(notification->status(),
-            CrostiniExportImportNotification::Status::CANCELLED);
+  EXPECT_FALSE(
+      crostini_export_import_->GetNotificationForTesting(container_id_));
   thread_bundle_.RunUntilIdle();
   EXPECT_FALSE(base::PathExists(tarball_));
 }
@@ -317,8 +317,8 @@ TEST_F(CrostiniExportImportTest, TestExportDoneBeforeCancelled) {
   // DONE: Completed before cancel processed, file should be deleted.
   SendExportProgress(
       vm_tools::cicerone::ExportLxdContainerProgressSignal_Status_DONE);
-  EXPECT_EQ(notification->status(),
-            CrostiniExportImportNotification::Status::CANCELLED);
+  EXPECT_FALSE(
+      crostini_export_import_->GetNotificationForTesting(container_id_));
   thread_bundle_.RunUntilIdle();
   EXPECT_FALSE(base::PathExists(tarball_));
 }
@@ -416,8 +416,8 @@ TEST_F(CrostiniExportImportTest, TestImportCancelled) {
   // CANCELLED:
   SendImportProgress(
       vm_tools::cicerone::ImportLxdContainerProgressSignal_Status_CANCELLED);
-  EXPECT_EQ(notification->status(),
-            CrostiniExportImportNotification::Status::CANCELLED);
+  EXPECT_FALSE(
+      crostini_export_import_->GetNotificationForTesting(container_id_));
 }
 
 TEST_F(CrostiniExportImportTest, TestImportDoneBeforeCancelled) {