The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8b3f098b2cc9d8741d65fba7891600982a887f63

commit 8b3f098b2cc9d8741d65fba7891600982a887f63
Author: Ryan Landay <rlanday@chromium.org>
Date: Tue Jun 12 18:26:31 2018

Fix bug long pressing tabs in Android horizontal tab switcher

The Android non-horizontal tab switcher with overlapping tabs has logic to show
more of a tab (by scrolling other ones down) if you long press on it. This logic
was inadvertently carried over to the new horizontal tab switcher, where it has
odd results.

This CL fixes this bug by moving this logic from Stack into OverlappingStack so
we don't use it in NonOverlappingStack.

Bug:  851521 ,831359
Change-Id: I98c18790a170661a221a61df109ed3ea050b6fd5
Reviewed-on: https://chromium-review.googlesource.com/1096477
Commit-Queue: Ryan Landay <rlanday@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#566509}
[modify] https://crrev.com/8b3f098b2cc9d8741d65fba7891600982a887f63/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/NonOverlappingStack.java
[modify] https://crrev.com/8b3f098b2cc9d8741d65fba7891600982a887f63/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/OverlappingStack.java
[modify] https://crrev.com/8b3f098b2cc9d8741d65fba7891600982a887f63/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/Stack.java

This bug requires manual review: M68 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), kariahda@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

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

Please verify in canary

Verified in 69.0.3457.0

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7c3183cc0800365da3a3586bb816937f8ee5f4de

commit 7c3183cc0800365da3a3586bb816937f8ee5f4de
Author: Ryan Landay <rlanday@chromium.org>
Date: Thu Jun 14 21:02:01 2018

Fix bug long pressing tabs in Android horizontal tab switcher

The Android non-horizontal tab switcher with overlapping tabs has logic to show
more of a tab (by scrolling other ones down) if you long press on it. This logic
was inadvertently carried over to the new horizontal tab switcher, where it has
odd results.

This CL fixes this bug by moving this logic from Stack into OverlappingStack so
we don't use it in NonOverlappingStack.

Bug:  851521 ,831359
Change-Id: I98c18790a170661a221a61df109ed3ea050b6fd5
Reviewed-on: https://chromium-review.googlesource.com/1096477
Commit-Queue: Ryan Landay <rlanday@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#566509}(cherry picked from commit 8b3f098b2cc9d8741d65fba7891600982a887f63)
Reviewed-on: https://chromium-review.googlesource.com/1101738
Reviewed-by: Ryan Landay <rlanday@chromium.org>
Cr-Commit-Position: refs/branch-heads/3440@{#364}
Cr-Branched-From: 010ddcfda246975d194964ccf20038ebbdec6084-refs/heads/master@{#561733}
[modify] https://crrev.com/7c3183cc0800365da3a3586bb816937f8ee5f4de/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/NonOverlappingStack.java
[modify] https://crrev.com/7c3183cc0800365da3a3586bb816937f8ee5f4de/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/OverlappingStack.java
[modify] https://crrev.com/7c3183cc0800365da3a3586bb816937f8ee5f4de/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/phone/stack/Stack.java