The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/76b93d2deee7a24a588b7472a7b67a3acdf26172

commit 76b93d2deee7a24a588b7472a7b67a3acdf26172
Author: Sahel Sharify <sahel@chromium.org>
Date: Fri May 11 18:47:47 2018

Don't suppress Showpress after a GFC followed by Tap down suppression

Showpress should get forwarded after a GFC followed by Tap down suppression.

Bug:  842221 
Change-Id: I60beaf3296557ec8c3d3d25b627f272b82114eed
Reviewed-on: https://chromium-review.googlesource.com/1055653
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Sahel Sharifymoghaddam <sahel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557958}
[modify] https://crrev.com/76b93d2deee7a24a588b7472a7b67a3acdf26172/content/browser/renderer_host/input/fling_controller.cc
[modify] https://crrev.com/76b93d2deee7a24a588b7472a7b67a3acdf26172/content/browser/renderer_host/input/fling_controller_unittest.cc
[modify] https://crrev.com/76b93d2deee7a24a588b7472a7b67a3acdf26172/content/browser/renderer_host/input/touchscreen_tap_suppression_controller.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/89b1db1d27b85a92fa09b9a505d0b6b2545a0a74

commit 89b1db1d27b85a92fa09b9a505d0b6b2545a0a74
Author: Sahel Sharifymoghaddam <sahel@chromium.org>
Date: Wed May 16 21:27:55 2018

Revert "Don't suppress Showpress after a GFC followed by Tap down suppression"

This reverts commit 76b93d2deee7a24a588b7472a7b67a3acdf26172.

Reason for revert: The cl is the root cause of crbug.com/843027

Original change's description:
> Don't suppress Showpress after a GFC followed by Tap down suppression
>
> Showpress should get forwarded after a GFC followed by Tap down suppression.
>
> Bug:  842221 
> Change-Id: I60beaf3296557ec8c3d3d25b627f272b82114eed
> Reviewed-on: https://chromium-review.googlesource.com/1055653
> Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
> Commit-Queue: Sahel Sharifymoghaddam <sahel@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#557958}

TBR=dtapuska@chromium.org,sahel@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug:  842221 , 843027
Change-Id: Ie47d1836059dd0336fa5c48a11bf5680e32f9adf
Reviewed-on: https://chromium-review.googlesource.com/1062545
Commit-Queue: Sahel Sharifymoghaddam <sahel@chromium.org>
Reviewed-by: Sahel Sharifymoghaddam <sahel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559300}
[modify] https://crrev.com/89b1db1d27b85a92fa09b9a505d0b6b2545a0a74/content/browser/renderer_host/input/fling_controller.cc
[modify] https://crrev.com/89b1db1d27b85a92fa09b9a505d0b6b2545a0a74/content/browser/renderer_host/input/fling_controller_unittest.cc
[modify] https://crrev.com/89b1db1d27b85a92fa09b9a505d0b6b2545a0a74/content/browser/renderer_host/input/touchscreen_tap_suppression_controller.cc

This change is not needed anymore.

With the revert in comment #4, we suppress a showpress after a GFC if the tap down event is suppressed.