This reverts commit 49d15209.

Reason for revert: Trigger Skia branch roller

Original change's description:
> White space to trigger Skia branch rollers
>
> Bug: skia:10306
> Change-Id: Ibcddc8c724130e315471413c2835687fe0571475
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3718660
> Auto-Submit: Liviu Rau <liviurau@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Commit-Queue: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81317}

Bug: skia:10306
Change-Id: I5b6f232dca57c305369fd58e912e46d980769634
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735133
Commit-Queue: Liviu Rau <liviurau@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#81469}

MinorMC maintained a separate marking state to support interleaved GCs.
Since MinorMC now assumes that interleaving is not possible, MinorMC can
use the same marking state as the full GC.

Bug: v8:12612
Change-Id: Ibeb7df2eb24e448f811b497c9d16b3b132f87ec2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735163Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81468}

The set of registers used for Pop/PushCallerSaved is a superset of the
ABI caller-saved registers. In the past it may have been the case that
these extra registers had to be saved, but at this point
Pop/PushCallerSaved is only used for fast C calls from JS, so we can
rely on the C-compiled functions saving callee-saved registers
correctly, and only save ABI-required registers ourselves.

Change-Id: I2a172bdbb381a1485654e54e3561d695b6672ed0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735130
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
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This file uses inline assembly, but inline assembly does not work
for cross-compilation. As this file only contains debug code, no-oping
this file for cross-compilation seems acceptable.

R=ishell@chromium.org

Bug: v8:12926
Change-Id: I01276cf019e8c31e4db6f7f61a3d91526f660578
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735165
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81466}

This is a necessary assumption for concurrent marking in MinorMC and
will simplify the code as it allows MinorMC to reuse the same marking
bitmap as full GCs.

Bug: v8:12612
Change-Id: I5e9be45c7d84320721ce7f7578dee1eb972d6f6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732933Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81465}

Change-Id: I6e84533581917afe90796265c563868fa1ab4448
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734810
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81464}

This reverts commit 83470dee.

Reason for revert: Introduced inconsistencies with the runtime (https://crbug.com/chromium/1339320) and increased inaccuracy
(https://crbug.com/v8/12996). Even though this is currently not specified, the speed improvement doesn't seem to be worth the
lower precision.

Bug: chromium:1339320, v8:12996

Original change's description:
> [turbofan] Add fast path for Math.pow with small positive integer exponent
>
> For small positive integer exponents, calculate the result with an inlined loop.
>
> This change may improve the average runtime of JetStream2/raytrace for ~8%.
>
> Change-Id: I0e3939dc9c21b0c392c04d61fd197bf618004ab4
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3708024
> Commit-Queue: Fanchen Kong <fanchen.kong@intel.com>
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81341}

Change-Id: Idfaa229b3d37a1831f016453c6091d2498cb6bcd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735129
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On old iPhones, jscvt is not availale. This CL diables jscvt on iOS in
general.

R=tebbi@chromium.org

Bug: v8:13004
Change-Id: Ib2651d7fa43892c06dc8c36e497a8c76344b5051
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726297Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81462}

We need this to expand the max input count to be big enough for our
biggest calls (and to add more bits to the op properties).

Bug: v8:7700
Change-Id: I6d63cf39b3079c3c85a32f208ce925ae795ef5a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734811
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
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Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81461}

Stack scan during marking for shared heap broke in
  https://crrev.com/c/3703837

This CL re-adds the client Isolate handling which is necessary as
those client Isolates may refer to the shared Isolate from stack.

Bug: v8:13019
Change-Id: I1ee27fb8bab173087a98a0b79f4126612427b016
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736444Reviewed-by: Nikolaos Papaspyrou <nikolaos@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81460}

Waiting for a background thread to finish a task isn't going to
work when there are no background threads. Luckily, we can sidestep
the problem by compiling with Turbofan immediately, instead of
triggering dynamic tier-up through repeated execution. As a nice bonus,
this makes the test faster in non-predictable modes too.

Fixed: v8:13020
Change-Id: I2d47bc07bbde48a210c6ea59551ae16e63bdae05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736443Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81459}

In DebugPropertyIterator::iterator() we were assuming that the call to
JSReceiver::GetOwnPropertyDescriptor() would always yield either an
exception or a valid property descriptor. But that's not guaranteed to
be the case (anymore), because JSReceiver::GetOwnPropertyDescriptor()
nowadays can chicken out with `false` for many different reasons.

Coincidentally the callsites to DebugPropertyIterator::iterator() are
already equipped to handle the case where of an empty property
descriptor, which is basically what we get out here. So this CL adjusts
the DebugPropertyIterator to return an empty descriptor in this case.

Fixed: chromium:1291240
Change-Id: I22a9d0cde2b2c6d3966a85478ed0b87fb4c5d232
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736445Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81458}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/5b369fe..26f8da3

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: Ia7497d20609919082eef79230051053d61c8460d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3737363
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Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/c76626e..322e254

Rolling v8/third_party/fuchsia-sdk/sdk: version:8.20220627.3.1..version:8.20220629.1.1

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/9406a60..af29db7

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: I769c1ece184dd94a752cf17bcf890a11fc70dab4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735118
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Fixed: chromium:1340488
Change-Id: Id3da10dd13256dfc15a6fef4dc412b5d30ccc8cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735126Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
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port commit b9c4a849

Change-Id: Id2764f7b37b287a76bd9b22e55f4153b9b619bd6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736554
Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Auto-Submit: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#81454}

https://github.com/tc39/proposal-temporal/pull/1917
https://github.com/tc39/proposal-temporal/pull/1953

Bug: v8:11544
Change-Id: I667980e312248ccbaf826d4e3104fb1ddabef890
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3721464
Commit-Queue: Frank Tang <ftang@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#81453}

Shifting negative integrals is undefined behavior. The CL simply
switches to uint64_t when decompressing, which anyway results in
sign-extension (in standard terms, integral promotion must preserve the
value and the sign of the source operand).

The CL doesn't have any functional changes, the generated code is the
same. It only fixes the ubsan report.

Bug: chromium:1325007
Change-Id: I491a87b84d4e98b0225f76825dac2f9e85f168d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736442
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Auto-Submit: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81452}

Bug: v8:11111
Change-Id: I4846910d05bb5d83c964b2279efdb7cf2a4545b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3733028Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81451}

Change-Id: I172f684515e363fc29e299c70fa3d6eac2789818
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735127
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
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Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
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This reverts commit b9821eff.

Reason for revert: Tests fail on gc-stress: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/39147/overview

Original change's description:
> [stringrefs] Implement string.new_wtf16_array
>
> See https://github.com/WebAssembly/stringref/issues/1.
>
> Bug: v8:12868
> Change-Id: Iea3940c48d5f47609ff7d32e366d2f41d2161372
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734808
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Andy Wingo <wingo@igalia.com>
> Cr-Commit-Position: refs/heads/main@{#81448}

Bug: v8:12868
Change-Id: I7abf8817c51057d9b984175ce162364acbb41ac4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735894
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Deepti Gandluri <gdeepti@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#81449}

See https://github.com/WebAssembly/stringref/issues/1.

Bug: v8:12868
Change-Id: Iea3940c48d5f47609ff7d32e366d2f41d2161372
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734808Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andy Wingo <wingo@igalia.com>
Cr-Commit-Position: refs/heads/main@{#81448}

GCC doesn't have __attribute__((require_constant_initialization)). Use
it only for clang.

Bug: chromium:1325007
Change-Id: Ide5d428ed107d3244072774c0031c042ed0cee31
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735125Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81447}

NamesProvider class:
This consolidates logic used so far for the debugger interface.
It also adds support for the "extended name section" proposal:
https://github.com/WebAssembly/extended-name-section

StringBuilder class:
Like std::ostringstream, but 4x faster for this use case.

This lays the groundwork for an updated Wasm disassembler.

Bug: v8:12917
Change-Id: I98aa258147834bc0e314ba98c5927b4cd6070b8f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3720714Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81446}

We might be racing with code that resets the age to 0, causing CAS to
fail (or us to read an already reset value).

Change-Id: I3ba555d64d48c4e2d2399978427c764c0e6e7128
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735167
Auto-Submit: Toon Verwaest <verwaest@chromium.org>
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See https://github.com/WebAssembly/stringref/issues/1.

Bug: v8:12868
Change-Id: Ic1c9b55b1ec35c32c79d9b2cb0be243b96fc4453
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734807
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This reverts commit 4cf08c1a.

Reason for revert: broke ubsan.

Original change's description:
> cppgc: Enable pointer compression by default on Desktop
>
> The CL enables pointer compression in Oilpan.
>
> For sherrifs: the CL may cause some slight perf regressions (likely
> blink_perf.*), due to slightly higher cost of compression and
> decomrpession.
>
> Speedometer2 is not expected to regress, as was checked locally. Such a
> slight performance degradation is compensated by memory savings that are
> expected to be around 10-20% of Oilpan committed size (~2.5-5% of Renderer
> PMF).
>
> Bug: chromium:1325007
> Change-Id: I2e31fc56250dbe6354a7614fa1f9e926260d842b
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3695565
> Commit-Queue: Anton Bikineev <bikineev@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81442}

Bug: chromium:1325007
Change-Id: Iabc31ed683841ba0189dee9028da330dc03d7e09
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735168
Auto-Submit: Anton Bikineev <bikineev@chromium.org>
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The CL enables pointer compression in Oilpan.

For sherrifs: the CL may cause some slight perf regressions (likely
blink_perf.*), due to slightly higher cost of compression and
decomrpession.

Speedometer2 is not expected to regress, as was checked locally. Such a
slight performance degradation is compensated by memory savings that are
expected to be around 10-20% of Oilpan committed size (~2.5-5% of Renderer
PMF).

Bug: chromium:1325007
Change-Id: I2e31fc56250dbe6354a7614fa1f9e926260d842b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3695565
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#81442}

gcc warns against passing a nullptr to a printf '%s' string print, and
the default args of varint consuming functions in the wasm decoder were
providing a null name.

Bug: chromium:1307180
Change-Id: I7a4e7a38119c2568025a597423d391a7c2c573f2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735123
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
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Add parser support for wasm instructions that create stringrefs from GC
arrays, and which encode strings to GC arrays.

Bug: v8:12868
Change-Id: I38446855b7a55366f8107970811aec935defcdb4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732935Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
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In this part: indexOf, lastIndexOf

Bug: v8:11111
Change-Id: I51481ccf44ad6c3ebc9216c1b6cc870fda73566e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726209
Commit-Queue: Marja Hölttä <marja@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#81439}

The barrier is currently not thread-safe but may be executed via
concurrent Sparkplug compilation. Remove the actual barrier code as
the remembered set is anyways not used yet.

Bug: v8:13018, chromium:1336850, chromium:1333414
Change-Id: I9287516d559cc3b10d170fa0fda36b26ca487a15
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734809
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#81438}

Change-Id: Ia09e8c4528e59116be39be12d688f5b99a34c8e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732938Reviewed-by: Igor Sheludko <ishell@chromium.org>
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Fix some final gcc warnings:

  * Manually roll googletest to get the fix in:
    https://crrev.com/d5ad28dbe14fca51038fb8c7610f11602b98f682
  * Remove some anonymous namespaces in tests because the types in those
    anonymous namespaces ended up being visible in non-anonymous
    classes.
  * Fix a RVO breaking std::move.
  * Change some known-too-short strncpys into memcpys

Bug: chromium:1307180
Change-Id: I0f64512f77655f3740fc297bbb2087e6c039f7f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735122
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Make sure that:

  * Temporaries are consistently free-but-blocked,
  * Blocked registers are ignored when processing free registers (where
    appropriate),
  * Fixed phis are processed before arbitrary register allocation,
  * Blocked state is set and cleared correctly
  * Opportunistic register moves on dropping don't block registers

Bug: v8:7700
Change-Id: I2bc8884f70d9e54ce6ee2fb5bb600b028a9502c3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732931
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Bug: chromium:1340335, chromium:1315901
Change-Id: Ic348e8a66df098f64cf1893f83c145ac7bdb1ecb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732939Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Auto-Submit: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81434}

Bug: chromium:1307180
Change-Id: Ia279086ec3df9d64bd6a0255ebe27d9e583014c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732937Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81433}

Bug: chromium:1307180
Change-Id: I45e01e172c04f5c0aac40cd84605ce52cb335cdc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732934
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81432}

Centralise constant visiting into the graph visitor, and adapt graph
printing to print both the labeller node id, and the node numbering node
id.

Bug: v8:7700
Change-Id: I1af8f97e546f7113ac5655522f9206f207a0ae97
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732932Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81431}

Change-Id: Id3586eae6580416216bce2c448e6885aaa1589b6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732111
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81430}