The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/64978f20b0da1e4012a570eaf060fd29f832522d

commit 64978f20b0da1e4012a570eaf060fd29f832522d
Author: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Date: Thu Jan 10 18:18:35 2019

[iOS][MF] Present the loading indicator for at least half second

Bug:  916541 
Change-Id: I4d6c161bbd72838e7e42cdc38298b1248652fb0d
Reviewed-on: https://chromium-review.googlesource.com/c/1384248
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621643}
[modify] https://crrev.com/64978f20b0da1e4012a570eaf060fd29f832522d/ios/chrome/browser/ui/autofill/manual_fill/fallback_view_controller.mm

[Auto-generated comment by a script] We noticed that this issue is targeted for M-72; it appears the fix may have landed after branch point, meaning a merge might be required. The owner of this bug should confirm if a merge is required here. If so, add Merge-Request-72 label and indicate which commits/CLs are to be merged. Otherwise, remove Merge-TBD label. Thanks.

This bug requires manual review: Less than 14 days to go before AppStore submit on M72
Please contact the milestone owner if you have questions.
Owners: govind@(Android), kariahda@(iOS), djmm@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Canary verification please.

Verified in latest Canary

Why does this need to make M72? Do you have a video of the flickering?

Previously the loading indicator would be visible for a couple of milliseconds and then load the credentials. Resolving the flicker was important for UX since it felt quite buggy. 

Approved. Please merge asap.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/191749be85efaeace4843d452825fa1e64dbd069

commit 191749be85efaeace4843d452825fa1e64dbd069
Author: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Date: Thu Jan 17 11:37:52 2019

[iOS][MF] Present the loading indicator for at least half second

Bug:  916541 
Change-Id: I4d6c161bbd72838e7e42cdc38298b1248652fb0d
Reviewed-on: https://chromium-review.googlesource.com/c/1384248
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#621643}(cherry picked from commit 64978f20b0da1e4012a570eaf060fd29f832522d)
Reviewed-on: https://chromium-review.googlesource.com/c/1417550
Reviewed-by: David Jean <djean@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#718}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
[modify] https://crrev.com/191749be85efaeace4843d452825fa1e64dbd069/ios/chrome/browser/ui/autofill/manual_fill/fallback_view_controller.mm

The following revision refers to this bug: 
https://chromium.googlesource.com/chromium/src.git/+/191749be85efaeace4843d452825fa1e64dbd069

Commit: 191749be85efaeace4843d452825fa1e64dbd069
Author: javierrobles@chromium.org
Commiter: djean@chromium.org
Date: 2019-01-17 11:37:52 +0000 UTC

[iOS][MF] Present the loading indicator for at least half second

Bug:  916541 
Change-Id: I4d6c161bbd72838e7e42cdc38298b1248652fb0d
Reviewed-on: https://chromium-review.googlesource.com/c/1384248
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#621643}(cherry picked from commit 64978f20b0da1e4012a570eaf060fd29f832522d)
Reviewed-on: https://chromium-review.googlesource.com/c/1417550
Reviewed-by: David Jean <djean@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#718}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}