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[Merge M80] [base] Enable kNoPriorityInheritanceFromThreadPool by def…

…ault

This is a safe change to make on trunk and merge to M80 to fix the
release-blocker. It was going to be a trunk change in November and has
been live 50/50 since. It was only an experiment to measure perf
impacts (which turned out to be nil).

Experiment results:
https://docs.google.com/document/d/13PIBPuSPJbrgHAgyRbY22EWAfH2narnxpa_CgBmZbSY/edit#heading=h.4fo2tzjehwu7

I will follow-up with the true code cleanup after since this CL is a
merge candidate for M80.

TBR=fdoray@chromium.org
(cherry picked from commit 34ade6b)

Bug: 1022972, 1039576
Change-Id: I7d3dc970ad02808d059865784067684573ece3d1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1992160
Auto-Submit: Gabriel Charette <gab@chromium.org>
Reviewed-by: François Doray <fdoray@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Commit-Queue: François Doray <fdoray@chromium.org>
Commit-Queue: Gabriel Charette <gab@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#729766}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1994429
Reviewed-by: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/branch-heads/3987@{#467}
Cr-Branched-From: c4e8da9-refs/heads/master@{#722274}
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Gabriel Charette Commit Bot
Gabriel Charette authored and Commit Bot committed Jan 11, 2020
1 parent d654bd0 commit 223686b51ce0f6ac50b4197c62adbd9f378a284c
Showing with 1 addition and 1 deletion.
  1. +1 −1 base/task/task_features.cc
@@ -26,6 +26,6 @@ const Feature kUseFiveMinutesThreadReclaimTime = {
"UseFiveMinutesThreadReclaimTime", base::FEATURE_DISABLED_BY_DEFAULT};

const Feature kNoPriorityInheritanceFromThreadPool{
"NoPriorityInheritanceFromThreadPool", base::FEATURE_DISABLED_BY_DEFAULT};
"NoPriorityInheritanceFromThreadPool", base::FEATURE_ENABLED_BY_DEFAULT};

} // namespace base

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