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It is shown when the response contained api error.
This prevents user from deleting those cards when migration
failure is probably due to server error.

Uploaded screenshot in bug comment#18

Bug: 897998
Change-Id: I828c6560f39e5383c25822631ed15fbc47e05222
Reviewed-on: https://chromium-review.googlesource.com/c/1332410
Commit-Queue: Siyu An <siyua@chromium.org>
Reviewed-by: Evan Stade <estade@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Reviewed-by: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#611365}