commit 14f3b4c779583bf11d39b4ed79095063d8b9e4c7
author Kartar Singh <kartarsingh@google.com> Wed May 14 23:24:55 2025
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed May 14 23:24:55 2025
tree 335ea2c33d8d67e4b2ce0612f7aa029587a95471
parent 1b9a647b2eca413015fafd9e2c0764d37a4481bd

[M137] [InputVizard] Use down time to account for transfer time in latency

Original change's description:
> [InputVizard] Use down time to account for transfer time in latency
> 
> When a touch sequence is transferred from Browser to Viz, the Viz
> process receives a new down and uses the event time of this newly
> synthesized down event for latency calculations. To account for time
> taken to transfer touch sequence we are using downtime on Viz for
> calculating latency of down event.
> 
> Note: This wouldn't resolve the issue with any pointer downs (that
> happen to occur before Browser had a chance to request touch transfer)
> from having incorrect latency calculations. Since down time is not the
> correct generation time to use for them, so the plan is to handle those
> with this bug where we will be forwarding events from Browser over to
> Viz: https://crbug.com/383307455.
> 
> Bug: 414788518
> Change-Id: I58264ee4dc034ebe9b46c74c6e7474ed398345ee
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6494577
> Reviewed-by: Jonathan Ross <jonross@chromium.org>
> Commit-Queue: Kartar Singh <kartarsingh@google.com>
> Cr-Commit-Position: refs/heads/main@{#1457577}

Bug: 417488679,414788518
Change-Id: I58264ee4dc034ebe9b46c74c6e7474ed398345ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6546641
Auto-Submit: Chrome Cherry Picker <chrome-cherry-picker@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/7151@{#1021}
Cr-Branched-From: 8e0d32ed6e49a2415b16e5ed402957cac2349ce2-refs/heads/main@{#1453031}