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Copyright 2021 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
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<!--
This file is used to generate a comprehensive list of others 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
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[email protected].
-->
<histogram-configuration>
<histograms>
<histogram name="PDF.Actions" enum="ChromePDFViewerActions"
expires_after="2025-02-10">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Tracks user actions in the PDF viewer. Logged when the document is opened
and when one of the relevant user actions is taken, such as opening the
bookmarks bar or setting the zoom mode to fit-to-page. The enum values that
are named "First" are logged only once per document, so that we
can measure in what percentage of documents a given action was performed at
least once.
</summary>
</histogram>
<histogram name="PDF.FormType" enum="PDFFormTypes" expires_after="2025-04-28">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Tracks what types of forms are present in PDF document, logged when the
document finishes loading.
</summary>
</histogram>
<histogram name="PDF.HasAttachment" enum="Boolean" expires_after="2025-03-22">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Measures if PDFs opened in the PDF viewer have attachments. This is logged
whenever a document is opened in the PDF viewer.
</summary>
</histogram>
<histogram name="PDF.LoadStatus" enum="ChromePDFViewerLoadStatus"
expires_after="2025-01-19">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Tracks what happens when Chrome tries to load a PDF. This metric tracks all
cases, but is focused on measuring failed PDF embeds, which occur if the
user is on Android, or if PDF plugin is disabled.
</summary>
</histogram>
<histogram name="PDF.PageCount" units="pages" expires_after="2025-02-09">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Tracks the number of pages in PDF documents opened in the PDF viewer.
</summary>
</histogram>
<histogram name="PDF.PostMessageDataType" enum="PDFPostMessageDataType"
expires_after="2025-02-02">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Tracks the type of postMessage() call made to the PDF viewer.
</summary>
</histogram>
<histogram name="PDF.RenderAndPaintVisiblePagesTime" units="ms"
expires_after="2025-01-05">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>
Time used for rendering and painting all the visible pages in the PDF
viewer.
</summary>
</histogram>
<histogram name="PDF.Version" enum="PDFVersion" expires_after="2025-01-05">
<owner>[email protected]</owner>
<owner>[email protected]</owner>
<summary>Tracks versions of documents opened in the PDF viewer.</summary>
</histogram>
</histograms>
</histogram-configuration>
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