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Issue metadata

Status: Unconfirmed
Owner: ----
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug



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Test PlatformAppBrowserTest.TouchpadPinchSyntheticWheelEvents is flaky on mac

Reported by ganenk...@yandex-team.ru, Dec 3

Issue description

UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 YaBrowser/18.7.1.177 Yowser/2.5 Safari/537.36

Steps to reproduce the problem:
1. Run PlatformAppBrowserTest.TouchpadPinchSyntheticWheelEvents on mac

What is the expected behavior?

What went wrong?
Relanding of original commit fixed problem with flakiness by adding several requestAnimationFrame requests
https://chromium-review.googlesource.com/c/chromium/src/+/1187345/3/chrome/test/data/extensions/platform_apps/touchpad_pinch/window.js#10
, but it was still not a guaranty that main thread and compositor thread were synchronized.

WebStore page: 

Did this work before? N/A 

Chrome version: 67.0.3396.87  Channel: n/a
OS Version: 
Flash Version:
 
Labels: Needs-Milestone
Project Member

Comment 2 by bugdroid1@chromium.org, Dec 4

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/52cb6d4d23587e46bb1d5f702be5fc9e7c10ca12

commit 52cb6d4d23587e46bb1d5f702be5fc9e7c10ca12
Author: Konstantin Ganenko <ganenkokb@yandex-team.ru>
Date: Tue Dec 04 09:29:01 2018

Fix flaky tests TouchpadPinchSyntheticWheelEvents.

Previously flakiness was fixed with adding several requestAnimationFrame
 requests, but it is still not a guaranty that main thread and compositor
 thread were synchronized.

Change-Id: I051abddc6ae45ffbccc068998b3f0afcd044fdb3
Bug: 911032
Reviewed-on: https://chromium-review.googlesource.com/c/1329180
Commit-Queue: Ben Wells <benwells@chromium.org>
Reviewed-by: Ben Wells <benwells@chromium.org>
Reviewed-by: Kevin McNee <mcnee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613482}
[modify] https://crrev.com/52cb6d4d23587e46bb1d5f702be5fc9e7c10ca12/chrome/browser/apps/platform_apps/app_browsertest.cc
[modify] https://crrev.com/52cb6d4d23587e46bb1d5f702be5fc9e7c10ca12/chrome/test/data/extensions/platform_apps/touchpad_pinch/window.js

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