<!--
Copyright 2020 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<!--
This file is used to generate a comprehensive list of Google histograms
along with a detailed description for each histogram.
For best practices on writing histogram descriptions, see
https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md
Please follow the instructions in the OWNERS file in this directory to find a
reviewer. If no OWNERS file exists, please consider signing up at
go/reviewing-metrics (Googlers only), as all subdirectories are expected to
have an OWNERS file. As a last resort you can send the CL to
[email protected].
-->
<histogram-configuration>
<histograms>
<histogram name="GoogleUpdate.ErrorHresult" enum="Hresult"
expires_after="never">
<!-- expires-never: Core metric for monitoring on-demand updates. -->
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>The HRESULT for a failed on-demand update check.</summary>
</histogram>
<histogram name="GoogleUpdate.InstallDetails.UpdateCohort"
enum="GoogleUpdateHashedCohortName" expires_after="2025-04-25">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
The hash of the browser's update cohort name that was present during browser
startup. Warning: this histogram was expired from 2019-06-01 to 2023-01-23;
data may be missing. This histogram is reported on every UMA log on Windows.
</summary>
</histogram>
<histogram name="GoogleUpdate.InstallDetails.UpdateCohortId"
enum="GoogleUpdateHashedCohortId" expires_after="2025-04-25">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
The base::PersistentHash of the browser's update cohort ID that was present
at the time of the metrics upload. This histogram is reported on every UMA
log on Windows. Unlike cohort name, cohort ID will generally be unique for
each rollout group and control group.
</summary>
</histogram>
<histogram name="GoogleUpdate.UpdateErrorCode" enum="GoogleUpdateErrorCode"
expires_after="never">
<!-- expires-never: Core metric for monitoring on-demand updates. -->
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>The error code for a failed on-demand update check.</summary>
</histogram>
<histogram name="GoogleUpdate.UpgradeResult" enum="GoogleUpdateUpgradeStatus"
expires_after="never">
<!-- expires-never: Core metric for monitoring on-demand updates. -->
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
The result of an on-demand update check. Expired 2024-01-14, and revived
2024-07-16. Data is incomplete.
</summary>
</histogram>
</histograms>
</histogram-configuration>
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