[page_load_metrics] User Initiated Abort Tracking (Observer version)

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index fcee21a9910e7d6202151507cc0955688bcfc267..766fec0177d4d934eb0f038b8bfa30c853bf433d 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -31369,6 +31369,55 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="PageLoad.AbortTiming.Close" units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the time the page load was
+    aborted by the user closing the tab or browser.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.AbortTiming.ForwardBackNavigation"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the time the page load was
+    aborted by a forward or back navigation.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.AbortTiming.NewNavigation" units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the time the page load was
+    aborted by a new navigation.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.AbortTiming.Other" units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the time the page load was
+    aborted. The abort cause is unknown.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.AbortTiming.Reload" units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the time the page load was
+    aborted by a reload.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.AbortTiming.Stop" units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the time the page load was
+    aborted by the user pressing stop.
+  </summary>
+</histogram>
+
 <histogram name="PageLoad.Clients.GoogleCaptcha.Events"
     enum="GoogleCaptchaEvent">
   <owner>mdw@chromium.org</owner>
@@ -31479,6 +31528,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="PageLoad.Timing2.NavigationToFirstBackgroundBeforePaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user faux-aborting a
+    committed load before its first paint by backgrounding the tab.
+  </summary>
+</histogram>
+
 <histogram name="PageLoad.Timing2.NavigationToFirstContentfulPaint"
     units="milliseconds">
   <owner>ksakamoto@chromium.org</owner>
@@ -31546,6 +31604,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="PageLoad.Timing2.Provisional.NavigationToFirstBackground"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user faux-aborting the load
+    before it commits by backgrounding the tab.
+  </summary>
+</histogram>
+
 <histogram name="PartitionAlloc.CommittedSize" units="MB">
   <owner>haraken@chromium.org</owner>
   <summary>
@@ -82645,6 +82712,17 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="PLT.LoadType"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="PageLoadAbortConditions">
+  <suffix name="BeforeCommit"/>
+  <suffix name="AfterCommit.BeforePaint"/>
+  <affected-histogram name="PageLoad.AbortTiming.Close"/>
+  <affected-histogram name="PageLoad.AbortTiming.ForwardBackNavigation"/>
+  <affected-histogram name="PageLoad.AbortTiming.NewNavigation"/>
+  <affected-histogram name="PageLoad.AbortTiming.Other"/>
+  <affected-histogram name="PageLoad.AbortTiming.Reload"/>
+  <affected-histogram name="PageLoad.AbortTiming.Stop"/>
+</histogram_suffixes>
+
 <histogram_suffixes name="PageLoadBackgrounded" separator=".">
   <obsolete>
     Deprecated in favor of PageLoadBackgrounded2.