The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/097d8d6efc117b1fecb4e7db16694a45ed074113

commit 097d8d6efc117b1fecb4e7db16694a45ed074113
Author: Xiaoqian Dai <xdai@chromium.org>
Date: Thu Dec 20 21:50:22 2018

splitview: The divider bar should be placed on top after tab dragging ends.

If a tab-dragged browser window is merged into another browser window
after the drag ends, we need to make sure the divider bar is placed
properly on top. Otherwise, it may not receive events properly.

Bug:  917068 
Change-Id: I1f19d9e7a94427e47b91a9c8b5b037dda3e2f1b8
Reviewed-on: https://chromium-review.googlesource.com/c/1387468
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618340}
[modify] https://crrev.com/097d8d6efc117b1fecb4e7db16694a45ed074113/ash/wm/splitview/split_view_controller.cc
[modify] https://crrev.com/097d8d6efc117b1fecb4e7db16694a45ed074113/ash/wm/splitview/split_view_controller.h
[modify] https://crrev.com/097d8d6efc117b1fecb4e7db16694a45ed074113/ash/wm/splitview/split_view_controller_unittest.cc

This issue might cause the split divider bar can't be used to resize snapped windows in split screen, thus request merge-back.

This bug requires manual review: M72 has already been promoted to the beta branch, so this requires manual review
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

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

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/+/b0508a52e67e7628f6f07be01227ca1ea0ad3ed3

commit b0508a52e67e7628f6f07be01227ca1ea0ad3ed3
Author: Xiaoqian Dai <xdai@chromium.org>
Date: Mon Jan 14 22:25:47 2019

[Merge to M72] splitview: The divider bar should be placed on top after tab dragging ends.

If a tab-dragged browser window is merged into another browser window
after the drag ends, we need to make sure the divider bar is placed
properly on top. Otherwise, it may not receive events properly.

Bug:  917068 
TBR=xiyuan@chromium.org

Change-Id: I1f19d9e7a94427e47b91a9c8b5b037dda3e2f1b8
Reviewed-on: https://chromium-review.googlesource.com/c/1387468
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#618340}(cherry picked from commit 097d8d6efc117b1fecb4e7db16694a45ed074113)
Reviewed-on: https://chromium-review.googlesource.com/c/1410128
Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#680}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
[modify] https://crrev.com/b0508a52e67e7628f6f07be01227ca1ea0ad3ed3/ash/wm/splitview/split_view_controller.cc
[modify] https://crrev.com/b0508a52e67e7628f6f07be01227ca1ea0ad3ed3/ash/wm/splitview/split_view_controller.h
[modify] https://crrev.com/b0508a52e67e7628f6f07be01227ca1ea0ad3ed3/ash/wm/splitview/split_view_controller_unittest.cc

Here's a summary of the rules that were executed: 
 - OnlyMergeApprovedChange: Rule Failed -- Revision b0508a52e67e7628f6f07be01227ca1ea0ad3ed3 was merged to refs/branch-heads/3626 branch with no merge approval from a TPM! 
Please explain why this change was merged to the branch!
 - AcknowledgeMerge: Notification Required -- 

The following revision refers to this bug: 
https://chromium.googlesource.com/chromium/src.git/+/b0508a52e67e7628f6f07be01227ca1ea0ad3ed3

Commit: b0508a52e67e7628f6f07be01227ca1ea0ad3ed3
Author: xdai@chromium.org
Commiter: xdai@chromium.org
Date: 2019-01-14 22:25:47 +0000 UTC

[Merge to M72] splitview: The divider bar should be placed on top after tab dragging ends.

If a tab-dragged browser window is merged into another browser window
after the drag ends, we need to make sure the divider bar is placed
properly on top. Otherwise, it may not receive events properly.

Bug:  917068 
TBR=xiyuan@chromium.org

Change-Id: I1f19d9e7a94427e47b91a9c8b5b037dda3e2f1b8
Reviewed-on: https://chromium-review.googlesource.com/c/1387468
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#618340}(cherry picked from commit 097d8d6efc117b1fecb4e7db16694a45ed074113)
Reviewed-on: https://chromium-review.googlesource.com/c/1410128
Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#680}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}