Revert "Add field trial testing config for BoostThreadPriorityOnLibraryLoadingAndBackgroundMode."

This reverts commit 9d6a01ba9f0c75e7b757400c75edbee58bbee217.

Reason for revert: Breaking GPU tests on GPU FYI waterfall and on ANGLE's CQ.
Bug: 1014659

Original change's description:
> Add field trial testing config for BoostThreadPriorityOnLibraryLoadingAndBackgroundMode.
> This experiment enables:
> - Use THREAD_MODE_BACKGROUND_BEGIN/END to set the priority of
>   background threads. This affects memory and IO priority in addition
>   to CPU priority.
> - Increase thread priority to "normal" in scopes where background
>   threads load modules.
> The expectation is that this will improve responsiveness of Chrome
> (input delay, first contentful paint), without regressing jank.
> We are adding the testing config in preparation for enabling this
> via Finch in M79.
> Bug: 973868
> Change-Id: I467cae12503e3ad724b665f3aebdaeb94e1325c9
> Reviewed-on:
> Commit-Queue: Robert Kaplow <>
> Reviewed-by: Robert Kaplow <>
> Auto-Submit: Fran├žois Doray <>
> Cr-Commit-Position: refs/heads/master@{#705960},

Change-Id: I509cbe39c2d4f91859f5e8614d7d8f8d819d3a7d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 973868
Reviewed-by: Kai Ninomiya <>
Commit-Queue: Kai Ninomiya <>
Cr-Commit-Position: refs/heads/master@{#706145}
1 file changed