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ukm.xml
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<!--
Copyright 2017 The Chromium Authors. All rights reserved.
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 Chrome UKM metrics
along with a detailed description for each metric.
See the following doc for details on how to add entries to this file:
https://chromium.googlesource.com/chromium/src.git/+/master/services/metrics/ukm_api.md
Events may be marked with the attribute singular="True" to indicate that
the event will only occur once per source, and multiple entries will just
be describing additional metrics about the same event.
-->
<ukm-configuration>
<event name="AbusiveExperienceHeuristic">
<owner>csharrison@chromium.org</owner>
<owner>yaoxia@chromium.org</owner>
<summary>
Obsolete. Various metrics recording experiences which are commonly used for
abusive purposes.
</summary>
<metric name="DidTabUnder">
<summary>
True if the page attempted a tab-under navigation.
</summary>
</metric>
<metric name="DidWindowOpenFromAdScript">
<summary>
True if the page called window.open with an ad script in the stack.
</summary>
</metric>
<metric name="DidWindowOpenFromAdSubframe">
<summary>
True if the page called window.open() from an ad subframe.
</summary>
</metric>
</event>
<event name="AbusiveExperienceHeuristic.JavaScriptDialog">
<owner>yaoxia@chromium.org</owner>
<metric name="DismissalCause">
<summary>
An enum that specifies the dismissal reason for JavaScript popup dialog
that can be triggered by window.alert(), window.confirm() or
window.prompt(). See JavaScriptDialogTabHelper::DismissalCause for the
enum elements.
</summary>
</metric>
</event>
<event name="AbusiveExperienceHeuristic.TabUnder">
<owner>csharrison@chromium.org</owner>
<metric name="DidTabUnder">
<summary>
True if the page attempted a tab-under navigation.
</summary>
</metric>
</event>
<event name="AbusiveExperienceHeuristic.WindowOpen">
<owner>yaoxia@chromium.org</owner>
<summary>
Recorded whenever window.open() is called when AdTagging is enabled.
</summary>
<metric name="FromAdScript">
<summary>
True if the page called window.open() with an ad script in the stack.
</summary>
</metric>
<metric name="FromAdSubframe">
<summary>
True if the page called window.open() from an ad subframe.
</summary>
</metric>
</event>
<event name="AdFrameLoad">
<owner>johnidel@chromium.org</owner>
<owner>jkarlin@chromium.org</owner>
<summary>
Records metrics associated with a single ad frame for a page load. An ad
frame includes itself and all of its child frames. Only recorded for frames
with non-zero bytes. Recorded when a page is destroyed or when the app is
backgrounded on mobile.
</summary>
<metric name="CpuTime.PeakWindowedPercent">
<summary>
The peak percentage of CPU utilization attributed to the frame in any 30
second window prior to user activation. Frames that exist for less than 30
seconds still use 30 seconds as the denominator for the calculation.
</summary>
</metric>
<metric name="CpuTime.PreActivation">
<summary>
Wall time of tasks attributed to the frame after the frame recieved user
activation. Measured in millseconds.
</summary>
</metric>
<metric name="CpuTime.Total">
<summary>
Total wall time of tasks attributed to the frame. Measured in
milliseconds.
</summary>
</metric>
<metric name="FrameDepth">
<summary>
The depth of this frame's frame tree. There is no set limit on a frame's
maximum depth.
</summary>
</metric>
<metric name="Loading.CacheBytes">
<obsolete>
Deprecated 09/2019. Replaced with Loading.CacheBytes2.
</obsolete>
<summary>
Bytes loaded from the cache for all resources loaded within the frame.
This is rounded down to the nearest exponential bucket (with a bucket
ratio of 1.3).
</summary>
</metric>
<metric name="Loading.CacheBytes2">
<summary>
Bytes loaded from the cache for all resources loaded within the frame.
This includes bytes loaded from both the HTTP cache and memory cache. This
is rounded down to the nearest exponential bucket (with a bucket ratio of
1.3).
</summary>
</metric>
<metric name="Loading.ImageBytes">
<summary>
Network bytes loaded for resources with an image mime type within the
frame. Includes header bytes. This is rounded down to the nearest
exponential bucket (with a bucket ratio of 1.3).
</summary>
</metric>
<metric name="Loading.JavascriptBytes">
<summary>
Network bytes loaded for resources with a javascript mime type within the
frame. Includes header bytes. This is rounded down to the nearest
exponential bucket (with a bucket ratio of 1.3).
</summary>
</metric>
<metric name="Loading.NetworkBytes">
<summary>
Network bytes loaded for all resources within the frame. Includes header
bytes. This is rounded down to the nearest exponential bucket (with a
bucket ratio of 1.3).
</summary>
</metric>
<metric name="Loading.NumResources">
<summary>
Total number of resources loaded by the frame, including incomplete
resources.
</summary>
</metric>
<metric name="Loading.VideoBytes">
<summary>
Network bytes loaded for resources with a video/ mime type within the
frame. Includes header bytes. This is rounded down to the nearest
exponential bucket (with a bucket ratio of 1.3).
</summary>
</metric>
<metric name="Status.CrossOrigin">
<summary>
An enum representing whether the frame was Cross-Origin or Same-Origin to
it's parent frame. See FrameData::OriginStatus.
</summary>
</metric>
<metric name="Status.Media">
<summary>
An enum representing whether media was played in the frame. See
FrameData::MediaStatus.
</summary>
</metric>
<metric name="Status.UserActivation">
<summary>
An enum representing whether the frame received user activation. See
FrameData::UserActivationStatus.
</summary>
</metric>
<metric name="Timing.FirstContentfulPaint">
<summary>
Number of milliseconds before FirstContentfulpaint was reached in the
frame. This is relative to subframe navigation start.
</summary>
</metric>
<metric name="Timing.Interactive">
<summary>
Number of millseconds before Time-To-Interactive was reached in the frame.
This is relative to subframe navigation start.
</summary>
</metric>
<metric name="Timing.PreActivationForegroundDuration">
<summary>
Number of millseconds that the current web contents spent in the
foreground prior to the frame receiving user activation.
</summary>
</metric>
<metric name="Visibility.FrameHeight">
<summary>
Last known height of the iframe in pixels. Not reported accurately when
"Visiblity.Hidden" is true. This is rounded down to the nearest
exponential bucket (with a bucket ratio of 1.15).
</summary>
</metric>
<metric name="Visibility.FrameWidth">
<summary>
Last known width of the iframe in pixels. Not reported accurately when
"Visiblity.Hidden" is true. This is rounded down to the nearest
exponential bucket (with a bucket ratio of 1.15).
</summary>
</metric>
<metric name="Visibility.Hidden">
<summary>
A 0 or 1 values representing whether the frame had a display=none styling
set. Records the last known value.
</summary>
</metric>
</event>
<event name="AdPageLoad" singular="True">
<owner>johnidel@chromium.org</owner>
<owner>jkarlin@chromium.org</owner>
<summary>
Recorded when a page has loadded non-zero ad bytes, and the page is being
destroyed/navigated.
</summary>
<metric name="AdBytes">
<summary>
Amount of network bytes used to load ad resource on the page. Includes
resources that did not finish, and top-level ads. Measured in kilobytes.
</summary>
</metric>
<metric name="AdBytesPerSecond">
<summary>
Amount of network bytes used to load ad resources on the page, per second
the page was alive after commit. Measured in kilobytes per second.
</summary>
</metric>
<metric name="AdBytesPerSecondAfterInteractive">
<summary>
Amount of network bytes used to load ad resources on the page per second
after the page was interactive. Measured in kilobytes.
</summary>
</metric>
<metric name="AdCpuTime">
<summary>
Amount of CPU wall time inside of ad iframes over the duration of a page
load, while the page is in the foreground. Measured in milliseconds.
</summary>
</metric>
<metric name="AdJavascriptBytes">
<summary>
Amount of network bytes used to load ad resources with a supported
javascript mime type on the page. Measured in kilobytes.
</summary>
</metric>
<metric name="AdVideoBytes">
<summary>
Amount of network bytes used to load ad resources with a video mime type
on the page. Measured in kilobytes.
</summary>
</metric>
<metric name="MainframeAdBytes">
<summary>
Amount of network bytes used to load ad resources in the main frame.
Includes resources that did not finish but does not include resources in
subframes. Measured in bytes. This is rounded to the nearest exponential
bucket (with a bucket ratio of 1.3).
</summary>
</metric>
<metric name="TotalBytes">
<summary>
Amount of network bytes used to load resources on the page. Includes
resources that did not finish. Measured in kilobytes.
</summary>
</metric>
</event>
<event name="AmpPageLoad" singular="True">
<owner>sullivan@chromium.org</owner>
<metric name="MainFrameAmpPageLoad">
<summary>
True if the page loaded in the main frame is an AMP document (has an amp
attribute in the html element). Will not be recorded for non-AMP frames.
Note that most AMP documents are loaded in a subframe from a reader like
Google Search; this metric measures sites that are using AMP as a
site-wide framework and not a reader experience.
</summary>
</metric>
<metric name="SubFrame.InteractiveTiming.FirstInputDelay3">
<obsolete>
Removed July 2019 in favor of FirstInputDelay4.
</obsolete>
<summary>
Measures First Input Delay, the duration between the hardware timestamp
and the start of event processing on the main thread for the first
meaningful input per navigation, in the AMP subframe. See
https://goo.gl/tr1oTZ for a detailed explanation. In milliseconds.
</summary>
</metric>
<metric name="SubFrame.InteractiveTiming.FirstInputDelay4">
<summary>
Measures First Input Delay, the duration between the hardware timestamp
and the start of event processing on the main thread for the first
meaningful input per navigation, in the AMP subframe. See
https://goo.gl/tr1oTZ for a detailed explanation. In milliseconds.
</summary>
</metric>
<metric name="SubFrame.LayoutInstability.CumulativeShiftScore">
<summary>
Measures the cumulative layout shift (bit.ly/lsm-explainer) that has
occurred during the session, in the AMP subframe. This metric's integral
value is 100x the fractional cumulative layout shift score described in
the explainer.
</summary>
</metric>
<metric
name="SubFrame.LayoutInstability.CumulativeShiftScore.BeforeInputOrScroll">
<summary>
Measures the cumulative layout shift (bit.ly/lsm-explainer) that has
occurred in the AMP subframe, before any user input or document scroll.
This metric's integral value is 100x the fractional cumulative layout
shift score described in the explainer.
</summary>
</metric>
<metric name="SubFrame.LayoutStability.JankScore">
<obsolete>
Removed July 2019 in favor of
SubFrame.LayoutInstability.CumulativeShiftScore.
</obsolete>
<summary>
Measures the amount of layout jank (bit.ly/lsm-explainer) that has
occurred during the session, in the AMP subframe. This metric's integral
value is 100x the fractional jank score described in the explainer.
</summary>
</metric>
<metric name="SubFrame.MainFrameToSubFrameNavigationDelta">
<summary>
Measures the time in milliseconds from the navigation in the main frame to
the navigation in the AMP subframe. Will be negative in cases where the
AMP subframe was prerendered. Will be positive in cases where the main
frame was a non-same-document navigation. Should be near-zero when the
main frame navigation is a same-document navigation and the AMP subframe
was not prerendered.
</summary>
</metric>
<metric name="SubFrame.PaintTiming.NavigationToFirstContentfulPaint">
<summary>
Measures the time in milliseconds from navigation timing's navigation
start to the time when the page first paints content, in the AMP subframe.
A contentful paint includes a paint of text, image, SVG, or canvas.
</summary>
</metric>
<metric name="SubFrame.PaintTiming.NavigationToLargestContentfulPaint">
<summary>
Measures the time in milliseconds from navigation timing's navigation
start to the time when the page first paints the largest content (text or
image) within viewport, in the AMP subframe. See
http://bit.ly/largest_contentful_paint_explainer for more details.
</summary>
</metric>
<metric name="SubFrame.PaintTiming.NavigationToLargestContentPaint">
<obsolete>
Deprecated 7/2019
</obsolete>
<summary>
Measures the time in milliseconds from navigation timing's navigation
start to the time when the page first paints the largest content (text or
image) within viewport, in the AMP subframe. See
http://bit.ly/largest_contentful_paint_explainer for more details.
</summary>
</metric>
<metric name="SubFrameAmpPageLoad">
<summary>
True if the page loaded in any subframe is an AMP document (has an amp
attribute in the html element). Will not be recorded for non-AMP frames.
Note that most AMP documents are loaded in a subframe from a reader like
Google Search; this metric measures usage of such readers.
</summary>
</metric>
</event>
<event name="AppListAppClickData">
<owner>pdyson@chromium.org</owner>
<summary>
AppListAppClickData events contain click history metrics for an app. These
events are recorded when an app is launched from the launcher on ChromeOS,
but may be for an app different from the app launched. See event
AppListAppLaunch for more detail on the keys used.
</summary>
<metric name="AppLaunchId">
<summary>
The ID of the app launch event.
</summary>
</metric>
<metric name="AppType">
<summary>
The type of app. 1: CHROME, 2: PLAY, 3: PWA/Bookmark app.
</summary>
</metric>
<metric name="ClickRank">
<summary>
Rank apps by total number of clicks. The app with the most clicks has rank
1.
</summary>
</metric>
<metric name="ClicksEachHour00">
<summary>
The number of clicks on this app in the current session that occurred
between 12:00am and 1:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour01">
<summary>
The number of clicks on this app in the current session that occurred
between 1:00am and 2:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour02">
<summary>
The number of clicks on this app in the current session that occurred
between 2:00am and 3:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour03">
<summary>
The number of clicks on this app in the current session that occurred
between 3:00am and 4:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour04">
<summary>
The number of clicks on this app in the current session that occurred
between 4:00am and 5:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour05">
<summary>
The number of clicks on this app in the current session that occurred
between 5:00am and 6:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour06">
<summary>
The number of clicks on this app in the current session that occurred
between 6:00am and 7:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour07">
<summary>
The number of clicks on this app in the current session that occurred
between 7:00am and 8:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour08">
<summary>
The number of clicks on this app in the current session that occurred
between 8:00am and 9:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour09">
<summary>
The number of clicks on this app in the current session that occurred
between 9:00am and 10:00am. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour10">
<summary>
The number of clicks on this app in the current session that occurred
between 10:00am and 11:00am. Bucketing: values above 20 rounded down to
the nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour11">
<summary>
The number of clicks on this app in the current session that occurred
between 11:00am and 12:00pm. Bucketing: values above 20 rounded down to
the nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour12">
<summary>
The number of clicks on this app in the current session that occurred
between 12:00pm and 1:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour13">
<summary>
The number of clicks on this app in the current session that occurred
between 1:00pm and 2:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour14">
<summary>
The number of clicks on this app in the current session that occurred
between 2:00pm and 3:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour15">
<summary>
The number of clicks on this app in the current session that occurred
between 3:00pm and 4:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour16">
<summary>
The number of clicks on this app in the current session that occurred
between 4:00pm and 5:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour17">
<summary>
The number of clicks on this app in the current session that occurred
between 5:00pm and 6:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour18">
<summary>
The number of clicks on this app in the current session that occurred
between 6:00pm and 7:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour19">
<summary>
The number of clicks on this app in the current session that occurred
between 7:00pm and 8:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour20">
<summary>
The number of clicks on this app in the current session that occurred
between 8:00pm and 9:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour21">
<summary>
The number of clicks on this app in the current session that occurred
between 9:00pm and 10:00pm. Bucketing: values above 20 rounded down to the
nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour22">
<summary>
The number of clicks on this app in the current session that occurred
between 10:00pm and 11:00pm. Bucketing: values above 20 rounded down to
the nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksEachHour23">
<summary>
The number of clicks on this app in the current session that occurred
between 11:00pm and 12:00am. Bucketing: values above 20 rounded down to
the nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="ClicksLast24Hours">
<summary>
The number of clicks on this app in the last 24 hours. Accurate to 15
minutes. Bucketing: values above 20 rounded down to the nearest 10.
Maximum value of 200.
</summary>
</metric>
<metric name="ClicksLastHour">
<summary>
The number of clicks on this app in the last hour. Accurate to one minute.
Bucketing: values above 20 rounded down to the nearest 10. Maximum value
of 200.
</summary>
</metric>
<metric name="LastLaunchedFrom">
<summary>
Where the app was last launched from. 1: GRID, 2: SUGGESTED, 3: SHELF.
</summary>
</metric>
<metric name="MostRecentlyUsedIndex">
<summary>
Index recording when in the sequence of app launch clicks the app was last
clicked on. 0: most recent app clicked on, 1: app clicked immediately
before the most recent, etc.
</summary>
</metric>
<metric name="SequenceNumber">
<summary>
The sequence number of the AppListAppLaunch event that corresponds to this
AppListAppClickData event. There will be six AppListAppClickData events
for each sequence number.
</summary>
</metric>
<metric name="TimeSinceLastClick">
<summary>
Time since this app was last clicked on to launch. In seconds, bucketed:
[1, 59] to the nearest second, [60, 599] to the nearest minute, [600,
1199] to the nearest 5 minutes, [1200, 3599] to the nearest 10 minutes,
[3600, 17999] to the nearest 30 minutes, [18000, 86400] to the nearest
hour.
</summary>
</metric>
<metric name="TotalClicks">
<summary>
Total number of clicks launching this app in this sesion. Bucketing:
values above 20 rounded down to the nearest 10. Maximum value of 200.
</summary>
</metric>
</event>
<event name="AppListAppLaunch">
<owner>pdyson@chromium.org</owner>
<summary>
Recorded when an app is launched from the launcher on ChromeOS. This can be
from the suggestion chip, or from the grid of apps. The UKM metrics are not
keyed by navigational urls. Instead, for Chrome apps the keys are based upon
the app id, for Play apps the keys are based upon a hash of the package name
and for PWAs and bookmark apps the keys are the urls associated with the
PWA/bookmark.
</summary>
<metric name="AllClicksLast24Hours">
<summary>
Total number of clicks launching logged apps in the last 24 hours.
Accurate to the nearest 15 minutes. Bucketing: values above 20 rounded
down to the nearest 10. Maximum value of 200.
</summary>
</metric>
<metric name="AllClicksLastHour">
<summary>
Total number of clicks launching logged apps in the last hour. Accurate to
the nearest minute. Bucketing: values above 20 rounded down to the nearest
10. Maximum value of 200.
</summary>
</metric>
<metric name="AppType">
<summary>
The type of app. 1: CHROME, 2: PLAY, 3: PWA/Bookmark app.
</summary>
</metric>
<metric name="ClickMethod">
<summary>
Click method. 1: MOUSE, 2: TOUCH, 3: SYTLUS, 4: KEYBOARD.
</summary>
</metric>
<metric name="DayOfWeek">
<summary>
An enum representing the day of the week that the data was logged in the
local time zone. Sunday = 0.
</summary>
</metric>
<metric name="DeviceMode">
<summary>
The mode of the device. 1: CLOSED_LID (Lid is closed), 2: LAPTOP (Lid is
open, tablet mode off or unsupported) , 3: TABLET (Lid is open, tablet
mode on or no lid at all).
</summary>
</metric>
<metric name="DeviceType">
<summary>
The type of the device. 1: TABLET, 2: LAPTOP.
</summary>
</metric>
<metric name="HourOfDay">
<summary>
The hour of the day when the data is logged. Hours since midnight in the
local time zone.
</summary>
</metric>
<metric name="LaunchedFrom">
<summary>
Where the app was launched from. 1: GRID, 2: SUGGESTED, 3: SHELF.
</summary>
</metric>
<metric name="PositionIndex">
<summary>
The position of the app within the grid/suggested apps/shelf. 0 is the
first position.
</summary>
</metric>
<metric name="TotalHours">
<summary>
Number of hours in the current session up to this event. Bucketing:
exponential buckets, increasing in size by 25%, rounded to the nearest
integer. i.e. 0, 1, 2, 3, 4, 5, 6, 7, 9, 12, 15, 18, 23, 28, 36, 44...
</summary>
</metric>
</event>
<event name="AppListNonAppImpression">
<owner>jiameng@chromium.org</owner>
<owner>thanhdng@chromium.org</owner>
<owner>tby@chromium.org</owner>
<summary>
Records details of impressions and launches of non-apps in the ChromeOS
launcher, such as files, omnibox results, and answer cards.
</summary>
<metric name="Category" enum="AppListNonAppImpressionCategory">
<summary>
The kind of launcher item. Corresponds to the value of
ChromeSearchResult::result_[sub]type.
</summary>
</metric>
<metric name="DayOfWeek">
<summary>
The day of the week that the event was logged on, in the local time zone.
Sunday is 0.
</summary>
</metric>
<metric name="DeviceMode" enum="AppListNonAppImpressionDeviceMode">
<summary>
The mode of the device.
</summary>
</metric>
<metric name="EventId">
<summary>
An ID linking together events within a single set of launcher search
results. One of these may be a launch, and the rest impressions.
</summary>
</metric>
<metric name="FileExtension" enum="AppListNonAppImpressionFileExtension">
<summary>
An enum representing the file extension if this event represents a local
or DriveFS file.
</summary>
</metric>
<metric name="HourOfDay">
<summary>
The hour of the day that the event was logged in. Hours measured from
midnight in the local timezone.
</summary>
</metric>
<metric name="IsLaunched" enum="Boolean">
<summary>
True if the item represented by this event was launched, false otherwise.
</summary>
</metric>
<metric name="LaunchesAtHour00">
<summary>
The number of launches within the last 24 hours at hour 0. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour01">
<summary>
The number of launches within the last 24 hours at hour 1. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour02">
<summary>
The number of launches within the last 24 hours at hour 2. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour03">
<summary>
The number of launches within the last 24 hours at hour 3. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour04">
<summary>
The number of launches within the last 24 hours at hour 4. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour05">
<summary>
The number of launches within the last 24 hours at hour 5. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour06">
<summary>
The number of launches within the last 24 hours at hour 6. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour07">
<summary>
The number of launches within the last 24 hours at hour 7. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour08">
<summary>
The number of launches within the last 24 hours at hour 8. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour09">
<summary>
The number of launches within the last 24 hours at hour 9. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour10">
<summary>
The number of launches within the last 24 hours at hour 10. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour11">
<summary>
The number of launches within the last 24 hours at hour 11. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour12">
<summary>
The number of launches within the last 24 hours at hour 12. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour13">
<summary>
The number of launches within the last 24 hours at hour 13. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour14">
<summary>
The number of launches within the last 24 hours at hour 14. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour15">
<summary>
The number of launches within the last 24 hours at hour 15. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour16">
<summary>
The number of launches within the last 24 hours at hour 16. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour17">
<summary>
The number of launches within the last 24 hours at hour 17. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour18">
<summary>
The number of launches within the last 24 hours at hour 18. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour19">
<summary>
The number of launches within the last 24 hours at hour 19. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour20">
<summary>
The number of launches within the last 24 hours at hour 20. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour21">
<summary>
The number of launches within the last 24 hours at hour 21. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour22">
<summary>
The number of launches within the last 24 hours at hour 22. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesAtHour23">
<summary>
The number of launches within the last 24 hours at hour 23. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="LaunchesThisSession">
<summary>
How many times this item has been launched during this session. Rounded
down to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="Position">
<summary>
The index of this item in the search results list. Indices start at 0.
</summary>
</metric>
<metric name="QueryLength">
<summary>
The length of the raw search query with whitespace trimmed. Rounded down
to the nearest exponential bucket, with a bucket ratio of 1.15.
</summary>
</metric>
<metric name="RelevanceScore">
<summary>
The raw relevance score returned by the relevant search provider for this
item.
</summary>
</metric>
<metric name="TimeOfLastLaunch">
<summary>
The hour when the previous launch of this item occurred. Hours measured
from midnight in the local timezone. This can be any value 0-23, as the
last launch could have been on a previous day.
</summary>
</metric>
<metric name="TimeSinceLastLaunch">
<summary>
Seconds since this item was last launched in this session. Rounded down to
the nearest exponential bucket, with a bucket ratio of 1.045. This makes
the bucket at 24 hour mark approximately 1 hour long.
</summary>
</metric>
</event>
<event name="Autofill.CardUploadDecision">
<owner>sebsg@chromium.org</owner>
<metric name="UploadDecision">
<summary>
Whether the upload was proposed to the user or the reasons why it was not.
The value is a bitmask of |CardUploadDecisionMetric|.
</summary>
</metric>
</event>
<event name="Autofill.DeveloperEngagement">
<owner>jiahuiguo@google.com</owner>
<summary>
Recorded when we parse a form to log whether developer has used autocomplete
markup or UPI-VPA hints. The value is a bitmask of
|DeveloperEngagementMetric|.
</summary>
<metric name="DeveloperEngagement"/>
<metric name="FormSignature">
<summary>
The signature of the form. This is the hash identifier used to denote this
form for query and voting purposes. See
components/autofill/core/common/signatures_util.cc for more details.
</summary>
</metric>
<metric name="FormTypes">
<summary>
Type of form. Stored as bitvector. A set ith bit implies enum FormType's
ith type was detected. Multiple types are possible.
</summary>
</metric>
<metric name="IsForCreditCard">
<summary>
True for credit card forms, false for address/profile forms. See
|FormStructure::IsCompleteCreditCardForm()|.
</summary>
</metric>
</event>
<event name="Autofill.FieldFillStatus">
<owner>rogerm@chromium.org</owner>
<summary>
Recorded when Chrome validates field type predictions (on submit, on leaving
a form, on receiving a form with autocomplete attributes).
</summary>
<metric name="FieldSignature">
<summary>
The signature of the field. This is the hash identifier used to denote
this field for query and voting purposes. See
components/autofill/core/common/signatures_util.cc for more details.
</summary>
</metric>
<metric name="FormSignature">
<summary>
The signature of the form. This is the hash identifier used to denote this
form for query and voting purposes. See
components/autofill/core/common/signatures_util.cc for more details.
</summary>
</metric>
<metric name="IsAutofilled">