New detail: Occasionally the back button will function, though it will display as active even if there is no history.

Sarah can you please take a look at this bug, As of now I don't have the touch bar machine.

Note : I haven't checked this but based on user input as regression I am tagging the bug as stable blocker for now.

I know what the problem is. Let me work on a fix

Please find the behavior on touchbar on different Chrome channels :

Stable/Beta(M61) : Back button works fine where on Forward is broken

Dev(62.0.3202.9)/Canary(63.0.3212.0) : Both Back/Forward buttons are disabled



Note : I am not bisecting since Sarah mentioned she is working on the fix and knows what's going on.

CL in review: https://chromium-review.googlesource.com/c/chromium/src/+/661055

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f508048a1ba16a303adf5338491d9e92edffcda9

commit f508048a1ba16a303adf5338491d9e92edffcda9
Author: spqchan <spqchan@chromium.org>
Date: Mon Sep 11 20:23:29 2017

[Mac] Update touch bar controls in each page load update

Update the back/forward and star items in the touch bar when the
page load state is updated.

Bug:  763730 
Change-Id: I77da6d9546e02c98ec1e8a2d65315e711bf74a03
Reviewed-on: https://chromium-review.googlesource.com/661055
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#501019}
[modify] https://crrev.com/f508048a1ba16a303adf5338491d9e92edffcda9/chrome/browser/ui/cocoa/browser_window_touch_bar.mm

WRT to comment #10.
Retested the above issue on latest Canary #63.0.3213.0 on Mac Touch Bar (10.12.1) and unable to see touch buttons on touch bar.

Chrome Version: 63.0.3213.0 (Official Build)58ee71082b735f6dae76665b444d534d9832b45c-refs/heads/master@{#501132} (64-bit).

OS: Mac Touch Bar(10.12.1).

Attaching a screenshot for Latest Canary. 

Thank You!

Deleted: Current Result.jpg 1.9 MB

	Current Result.jpg 1.9 MB View Download

Rechecked this issue on Chrome version #63.0.3213.0 on MAC touch bar 10.12.6 and observed that touch buttons on touch bar are working fine. Able to view front and back navigation Bar. Screen Shot attached.

Adding TE-verified labels for M63.

Note: In previous comment OS version was MAC 10.12.1 and in current comment MAC Version used was 10.12.6. Could this be related.

Can some one confirm.

Thanks.!

Deleted: MAC-Touch bar.jpg 3.4 MB

	MAC-Touch bar.jpg 3.4 MB View Download

Missed in Above comment, Front and back navigation is also working fine using touch bar on MAC 10.12.6, Chrome version 63.0.3213.0.

Thanks.!

This bug requires manual review: Request affecting a post-stable build
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), ketakid@(ChromeOS), govind@(Desktop)

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

Justification: This fixes the UI bug and should be safe to merged. This was tested thoroughly and does not cause any crashes AFAIK

Unable to reproduce the issue in #11

Approving merge to M61 branch 3163 based on comments #12, #13, #16 and #17. Please merge ASAP. Thank you.

This also needs to be merged to M62. Please request a merge.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/300c8bdaec048cf8b4af62419641275af0188945

commit 300c8bdaec048cf8b4af62419641275af0188945
Author: spqchan <spqchan@chromium.org>
Date: Tue Sep 12 20:25:15 2017

[Mac] Update touch bar controls in each page load update

Update the back/forward and star items in the touch bar when the
page load state is updated.

(cherry picked from commit f508048a1ba16a303adf5338491d9e92edffcda9)

Bug:  763730 
Change-Id: I77da6d9546e02c98ec1e8a2d65315e711bf74a03
Reviewed-on: https://chromium-review.googlesource.com/661055
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Sarah Chan <spqchan@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#501019}
Reviewed-on: https://chromium-review.googlesource.com/663842
Reviewed-by: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/branch-heads/3163@{#1174}
Cr-Branched-From: ff259bab28b35d242e10186cd63af7ed404fae0d-refs/heads/master@{#488528}
[modify] https://crrev.com/300c8bdaec048cf8b4af62419641275af0188945/chrome/browser/ui/cocoa/browser_window_touch_bar.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d1ef15db9ca06f76fe4f48836f1cacc20142f845

commit d1ef15db9ca06f76fe4f48836f1cacc20142f845
Author: Sarah Chan <spqchan@chromium.org>
Date: Tue Sep 12 21:42:22 2017

Revert "[Mac] Update touch bar controls in each page load update"

This reverts commit 300c8bdaec048cf8b4af62419641275af0188945.

Reason for revert: Compile error

Original change's description:
> [Mac] Update touch bar controls in each page load update
> 
> Update the back/forward and star items in the touch bar when the
> page load state is updated.
> 
> (cherry picked from commit f508048a1ba16a303adf5338491d9e92edffcda9)
> 
> Bug:  763730 
> Change-Id: I77da6d9546e02c98ec1e8a2d65315e711bf74a03
> Reviewed-on: https://chromium-review.googlesource.com/661055
> Reviewed-by: Avi Drissman <avi@chromium.org>
> Commit-Queue: Sarah Chan <spqchan@chromium.org>
> Cr-Original-Commit-Position: refs/heads/master@{#501019}
> Reviewed-on: https://chromium-review.googlesource.com/663842
> Reviewed-by: Sarah Chan <spqchan@chromium.org>
> Cr-Commit-Position: refs/branch-heads/3163@{#1174}
> Cr-Branched-From: ff259bab28b35d242e10186cd63af7ed404fae0d-refs/heads/master@{#488528}

TBR=spqchan@chromium.org

Change-Id: Idd163fb061bef4c3f41319ee8e361883fd91e859
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  763730 
Reviewed-on: https://chromium-review.googlesource.com/663947
Reviewed-by: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/branch-heads/3163@{#1177}
Cr-Branched-From: ff259bab28b35d242e10186cd63af7ed404fae0d-refs/heads/master@{#488528}
[modify] https://crrev.com/d1ef15db9ca06f76fe4f48836f1cacc20142f845/chrome/browser/ui/cocoa/browser_window_touch_bar.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d8aab5215ed9c3461cd2a12b432beaa9a5f6b59b

commit d8aab5215ed9c3461cd2a12b432beaa9a5f6b59b
Author: spqchan <spqchan@chromium.org>
Date: Tue Sep 12 22:07:05 2017

[Mac] Update touch bar controls in each page load update

Update the back/forward and star items in the touch bar when the
page load state is updated.

(cherry picked from commit f508048a1ba16a303adf5338491d9e92edffcda9)

Bug:  763730 
Change-Id: I6fcbfde08c3230c497953215eb688e521eef495b
Reviewed-on: https://chromium-review.googlesource.com/663766
Reviewed-by: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/branch-heads/3163@{#1178}
Cr-Branched-From: ff259bab28b35d242e10186cd63af7ed404fae0d-refs/heads/master@{#488528}
[modify] https://crrev.com/d8aab5215ed9c3461cd2a12b432beaa9a5f6b59b/chrome/browser/ui/cocoa/browser_window_touch_bar.mm

Rechecked this issue on Chrome version #61.0.3163.91 on MAC touch bar 10.12.6 and observed that touch buttons on touch bar are working fine. Able to view and navigate using front and back navigation Bar. 

Adding TE-verified labels for M61.

This bug requires manual review: M62 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

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

Approving merge to M62. Branch:3202

This patch is now pushing out to stable channel in version 61.0.3163.91 for Desktop (Win,Mac & Linux).

Thank you for fixing the bug. Requesting postmortem for this please see go/chrome-postmortems for the process to follow.

Thanks! I'll work on one

Thank you spqchan@.

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7a534c0e12318d847ee01f500351ec51a6f266d8

commit 7a534c0e12318d847ee01f500351ec51a6f266d8
Author: spqchan <spqchan@chromium.org>
Date: Mon Sep 18 17:09:43 2017

[Mac] Update touch bar controls in each page load update

Update the back/forward and star items in the touch bar when the
page load state is updated.

(cherry picked from commit f508048a1ba16a303adf5338491d9e92edffcda9)

Bug:  763730 
Change-Id: I77da6d9546e02c98ec1e8a2d65315e711bf74a03
Reviewed-on: https://chromium-review.googlesource.com/661055
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Sarah Chan <spqchan@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#501019}
Reviewed-on: https://chromium-review.googlesource.com/671486
Reviewed-by: Sarah Chan <spqchan@chromium.org>
Cr-Commit-Position: refs/branch-heads/3202@{#291}
Cr-Branched-From: fa6a5d87adff761bc16afc5498c3f5944c1daa68-refs/heads/master@{#499098}
[modify] https://crrev.com/7a534c0e12318d847ee01f500351ec51a6f266d8/chrome/browser/ui/cocoa/browser_window_touch_bar.mm

Verified this issue on MacBook Pro with touch bar using chrome latest M62-62.0.3202.29 by following steps mentioned in the original comment, Observed able to navigate the page forward and backward as expected. Hence adding TE-Verified label.

Note: Unable to go back/forward using touch bar in chrome after opening a New Tab, filed a separate  issue 766969 .

Thanks!