lpromero@ Are these MDC buttons? 

Yes. I'll look into it.

Reproes on Plus phones in landscape too.

Reproes in MDC too: https://github.com/material-components/material-components-ios/issues/1160

Found the cause and offending CL.

https://codereview.chromium.org/2649043008
This might get fixed upstream, but this already fixes us. It's not a workaround, it's just that we explicitly say how we want the button to behave.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/76b2a485c54fb25c8a0fe271033715899c41a83c

commit 76b2a485c54fb25c8a0fe271033715899c41a83c
Author: lpromero <lpromero@chromium.org>
Date: Wed Jan 25 16:24:42 2017

Prevent infobar buttons title color from changing when disabled

BUG= 681538 
R=jif@chromium.org

Review-Url: https://codereview.chromium.org/2649043008
Cr-Commit-Position: refs/heads/master@{#446031}

[modify] https://crrev.com/76b2a485c54fb25c8a0fe271033715899c41a83c/ios/chrome/browser/ui/infobars/infobar_view.mm

Checked on Canary Version: 58.0.2993.0

Your change meets the bar and is auto-approved for M57. Please go ahead and merge the CL to branch 2987 manually. Please contact milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8800f7fad63d90317be975352e893fd7639a4dc5

commit 8800f7fad63d90317be975352e893fd7639a4dc5
Author: Louis Romero <lpromero@google.com>
Date: Thu Jan 26 15:30:44 2017

Prevent infobar buttons title color from changing when disabled

BUG= 681538 
R=jif@chromium.org

Review-Url: https://codereview.chromium.org/2649043008
Cr-Commit-Position: refs/heads/master@{#446031}
(cherry picked from commit 76b2a485c54fb25c8a0fe271033715899c41a83c)

Review-Url: https://codereview.chromium.org/2659613002 .
Cr-Commit-Position: refs/branch-heads/2987@{#103}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

[modify] https://crrev.com/8800f7fad63d90317be975352e893fd7639a4dc5/ios/chrome/browser/ui/infobars/infobar_view.mm

Verified in 58.0.2998.0 canary, iPad air 9.3.5
Looks good.

Issue not fixed.  Checked on chrome beta version 57.0.2987.18 on iPad Air with iOS 10.1.1.  The color of the button still fades out.

I don't repro on 57.0.2987.42 beta on iPad Air 10.1.

Venu, can you check again? Do other configs work?

verified the issue in the build 57.0.2987.50 dev and 57.0.2987.42 beta tested on iPad Air(10.1.1).

Issue can be reproduced on Sign In and continue buttons.
Attaching the video :
https://drive.google.com/a/google.com/file/d/0B--UpU2GW2EpVk1IU1NGeTNILUE/view?usp=sharing

Thanks! I repro with Sign in too. 

https://github.com/material-components/material-components-ios/commit/993edaa5512ce941e5e14e3737945aaa7468b4b5 is the fix, but we need for it to be released around Wednesday, then rolled in our tree. Then we can cherry-pick once it cleared a Canary.

Thanks!

The fix was released and rolled in our tree.
I verified on Chrome Canary Version: 58.0.3012.0, the button is behaving correctly. Asking for merge to 57.

This bug requires manual review: Less than 2 weeks to go before AppStore submit on M57
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

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

+cmasso for approval.

https://drive.google.com/open?id=0B6GVWQnhaMClT1Vsb1ZTYk1qeEk
Verified on iPad Air iOS 9.3.5 , iPad Pro iOS 10.2.1 on build 58.0.3013.0 Canary
Text "Continue" button in Sign in to Chrome screen and "Restore" button in crash infobar looks good , they are not faded out.

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

Thanks for your time! To disable nags, add the Disable-Nags label.

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

Cherry-pick:

$ git push origin 2987:refs/branch-heads/2987
Counting objects: 6, done.
Delta compression using up to 24 threads.
Compressing objects: 100% (6/6), done.
Writing objects: 100% (6/6), 587 bytes | 0 bytes/s, done.
Total 6 (delta 5), reused 0 (delta 0)
remote: Resolving deltas: 100% (5/5)
remote: Processing changes: done    
To https://chromium.googlesource.com/external/github.com/material-components/material-components-ios.git
   5f604cddce..4a0ab6ff58  2987 -> refs/branch-heads/2987

Verified on iPad Air iOS 9.3.5 , iPad Pro iOS 10.2.1 on build 57.0.2987.75 dev
Text "Continue" button in Sign in to Chrome screen and "Restore" button in crash infobar looks good , they are not faded out.