To anyone following this bug, here's the approval from launch review to proceed with making this default on trunk: https://groups.google.com/a/google.com/d/topic/chrome-launch-review/9Ub8euoKGdc/discussion

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/35980e3860cd6bb4241e9b4a6213048dcd6920e4

commit 35980e3860cd6bb4241e9b4a6213048dcd6920e4
Author: robliao <robliao@chromium.org>
Date: Fri Nov 18 03:23:33 2016

Enable Initialization of the Task Scheduler by Default in the Browser Process

This change also centralizes the initialization to components/task_scheduler.

BUG= 662053 

Review-Url: https://codereview.chromium.org/2506693002
Cr-Commit-Position: refs/heads/master@{#433057}

[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/chrome/app/generated_resources.grd
[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/chrome/browser/chrome_browser_main.cc
[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/components/task_scheduler_util/BUILD.gn
[add] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/components/task_scheduler_util/DEPS
[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/components/task_scheduler_util/initialization_util.cc
[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/components/task_scheduler_util/initialization_util.h
[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/ios/chrome/app/strings/ios_strings.grd
[modify] https://crrev.com/35980e3860cd6bb4241e9b4a6213048dcd6920e4/ios/chrome/browser/ios_chrome_main_parts.mm

Hi TPMs, r433057 unintentionally barely made the M56 cut. Since it's useless at best and mildly bad at worse without its follow-up CLs we'd like to revert it on M56 branch.

CL up @ https://codereview.chromium.org/2521653002 pending your merge approval (not really a merge, just a harmless revert on branch..).

[Automated comment] DEPS changes referenced in bugdroid comments, needs manual review.

+bustamante: this feature is for M57, we're looking to revert its first unintentional commit on M56 branch as described in #7, ok? It's possible to avoid touching strings/DEPS if that matters.

Yeah sounds good, approving for merge into M56 so it can get reverted.  Thanks!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0

commit d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0
Author: Gabriel Charette <gab@chromium.org>
Date: Tue Nov 29 15:09:09 2016

[M56] Revert "Enable Initialization of the Task Scheduler by Default in the Browser Process"

This reverts commit 35980e3860cd6bb4241e9b4a6213048dcd6920e4 on M56 branch.

It unintentionally barely made the M56 cut and is useless without its follow-up CLs.

BUG= 662053 
TBR=robliao@chromium.org

Review URL: https://codereview.chromium.org/2521653002 .

Cr-Commit-Position: refs/branch-heads/2924@{#154}
Cr-Branched-From: 3a87aecc31cd1ffe751dd72c04e5a96a1fc8108a-refs/heads/master@{#433059}

[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/chrome/app/generated_resources.grd
[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/chrome/browser/chrome_browser_main.cc
[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/components/task_scheduler_util/BUILD.gn
[delete] https://crrev.com/146e4c96e3e45a0edb5d04f6b76d44e86cdb24f7/components/task_scheduler_util/DEPS
[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/components/task_scheduler_util/initialization_util.cc
[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/components/task_scheduler_util/initialization_util.h
[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/ios/chrome/app/strings/ios_strings.grd
[modify] https://crrev.com/d9b5f3f09b0ac69f9ef4541abaa8d1fa891e35a0/ios/chrome/browser/ios_chrome_main_parts.mm