[discard] Set single_outermost_main_frame for WebContentsDiscard [chromium/src : main]

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Tom Lukaszewicz (Gerrit)

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Nov 25, 2025, 5:28:33 PMNov 25
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Tom Lukaszewicz . resolved

Keren ptal

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Tom Lukaszewicz (Gerrit)

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Dec 2, 2025, 12:12:50 AMDec 2
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Tom Lukaszewicz . resolved

I believe the failure was unrelated - should be good now

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Tom Lukaszewicz (Gerrit)

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Dec 2, 2025, 2:50:49 PMDec 2
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Tom Lukaszewicz . resolved

Flake seems to be specific to test infra setup on android bots. Filed a bug and disabled the test on android in the upstream CL. PTAL when you get a chance.

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Keren Zhu (Gerrit)

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Keren Zhu . resolved

looks reasonable but admittedly I don't understand the code.

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    Tom Lukaszewicz (Gerrit)

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    Dec 7, 2025, 7:56:33 PMDec 7
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    Chromium LUCI CQ (Gerrit)

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    Dec 7, 2025, 8:57:32 PMDec 7
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    Chromium LUCI CQ submitted the change

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    4 is the latest approved patch-set.
    No files were changed between the latest approved patch-set and the submitted one.

    Change information

    Commit message:
    [discard] Set single_outermost_main_frame for WebContentsDiscard

    This CL updates AttemptFastKillForDiscard() to set the
    single_outermost_main_frame param for FastShutdownIfPossible() when
    running the WebContentsDiscard experiment.

    This param allows fast-kills in the case where all frames resident
    in a process belong to a single WebContents, vs page_count which
    checks for RenderWidgetHost counts (all of which may belong to
    a single tab but add to a count greater than 0).

    This CL affects behavior only when running WebContentsDiscard
    (behavior is unchanged otherwise).
    Bug: 463735439
    Change-Id: Ide557a6821f7a8c66dd6871b7281d04bd0693cbf
    Commit-Queue: Tom Lukaszewicz <tl...@chromium.org>
    Reviewed-by: Keren Zhu <kere...@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#1555253}
    Files:
    • M chrome/browser/resource_coordinator/utils.cc
    Change size: S
    Delta: 1 file changed, 12 insertions(+), 2 deletions(-)
    Branch: refs/heads/main
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    Takashi Sakamoto (Gerrit)

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    Dec 7, 2025, 10:37:03 PMDec 7
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    Takashi Sakamoto has created a revert of this change

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