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Unified Diff: tools/metrics/histograms/histograms.xml

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Issue 2006203002: Fix that NewTabPage.Snippets.CardShown was recorded too early/often. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: After code review #2 Created 4 years, 6 months ago
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Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 391242f244846eb38985d9e8a0799f8e83157fcf..3bc86e4043384707ba4780dc5ae293425c799afa 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -33693,9 +33693,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
<histogram name="NewTabPage.Snippets.CardShown">
<owner>knn@chromium.org</owner>
<summary>
- Android: The position of the snippets card that is shown on the NTP.
- Depending on the device screen size only some of the cards will be shown
- unless the users scrolls through.
+ Android: The position of the snippets card that is shown on the NTP. Each
+ snippet (its position) is recorded whenever at least 1/3 of it height
+ becomes visible by scrolling through the NTP. Each snippet is recorded at
+ most once for a given instance of NTP and a given data set of snippets that
+ is shown. We track the position the snippet had in the list when NTP was
Alexei Svitkine (slow) 2016/05/25 20:23:08 Nit: Extra space after .
jkrcal 2016/05/26 21:48:49 Done.
+ loaded. This tracked position is thus different from the position observed
Alexei Svitkine (slow) 2016/05/25 20:23:08 Nit: Extra space after thus.
jkrcal 2016/05/26 21:48:49 Done.
+ by the user whenever before scrolling down to the given snippet, the user
+ discards some snippets in the top of the list.
Alexei Svitkine (slow) 2016/05/25 20:23:08 Maybe worth mentioning that previously it was reco
jkrcal 2016/05/26 21:48:49 Done.
</summary>
</histogram>

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