Reland "[task] Integrate SequenceManager "best effort" into ThreadType mapping" [chromium/src : main]

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Mei Liang (Gerrit)

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    Mei Liang (Gerrit)

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    Mei Liang (Gerrit)

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    Etienne Pierre-Doray (Gerrit)

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    Apr 28, 2026, 5:15:34 PM (13 days ago) Apr 28
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    Gabriel Charette (Gerrit)

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    Etienne Pierre-Doray (Gerrit)

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    Chromium LUCI CQ (Gerrit)

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    Apr 28, 2026, 11:08:20 PM (13 days ago) Apr 28
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    Chromium LUCI CQ submitted the change

    Change information

    Commit message:
    Reland "[task] Integrate SequenceManager "best effort" into ThreadType mapping"

    This is a reland of commit 0c91a42a7765ab67ed253908362e3e25087ab46a

    Reason for revert: Tree is broken, https://ci.chromium.org/ui/p/chromium/bisection/compile-analysis/b/8683330511251170193
    Fix: https://chromium-review.git.corp.google.com/c/chromium/src/+/7783493 introduced
    a call to GetCurrentBestEffort(), but that was reverted as well.
    Now relanding without GetCurrentBestEffort() as
    https://chromium-review.git.corp.google.com/c/chromium/src/+/7801737

    Original change's description:
    > [task] Integrate SequenceManager "best effort" into ThreadType mapping
    >
    > This CL integrates concept of SequenceManager best effort task runner
    > into ThreadType mapping, allowing for multiple TaskPriority to be considered "best effort".
    > This also removes unused GetCurrentBestEffort(), since it would otherwise need to be updated.
    >
    > Bug: 495439030
    > Change-Id: I3c71c4b81ea05a767868d0f07076e0760fe4dec6
    > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7736792
    > Reviewed-by: Gabriel Charette <g...@chromium.org>
    > Reviewed-by: Joe Mason <joenot...@google.com>
    > Commit-Queue: Etienne Pierre-Doray <etie...@chromium.org>
    > Cr-Commit-Position: refs/heads/main@{#1621347}
    Bug: 495439030
    Change-Id: If10815ebb9238429575800c39df2dc5e0d19a9ef
    Reviewed-by: Gabriel Charette <g...@chromium.org>
    Commit-Queue: Etienne Pierre-Doray <etie...@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#1622201}
    Files:
    • M base/task/sequence_manager/sequence_manager_impl.cc
    • M base/task/sequence_manager/sequence_manager_impl.h
    • M base/task/sequence_manager/sequence_manager_impl_unittest.cc
    • M base/task/sequenced_task_runner.cc
    • M base/task/sequenced_task_runner.h
    • M base/task/sequenced_task_runner_unittest.cc
    • M base/task/single_thread_task_runner.cc
    • M base/task/single_thread_task_runner.h
    • M base/task/single_thread_task_runner_unittest.cc
    • M base/test/task_environment.cc
    • M base/test/task_environment.h
    Change size: L
    Delta: 11 files changed, 42 insertions(+), 571 deletions(-)
    Branch: refs/heads/main
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    Gerrit-Change-Number: 7800519
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