[do not review][page_load_metrics] User Initiated Abort Tracking

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 e4c9971a06483a498240fd0aa61f753ed4615045..9bc02f046ce5eba76d318966b9bc35caf24d89d7 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -30973,6 +30973,151 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="PageLoad.Timing2.Aborts.Committed.BackgroundBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user faux-aborting the load
+    before its first paint by backgrounding the tab. The load had committed and
+    received initial data.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Committed.CloseBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by closing the tab or browser. The load had committed and
+    received initial data.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Committed.ForwardBackBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by going back/forward. The load had committed and received
+    initial data.
+  </summary>
+</histogram>
+
+<histogram
+    name="PageLoad.Timing2.Aborts.Committed.NewNavigationBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by starting a new navigation. The load had committed and
+    received initial data.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Committed.OtherAbortBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by some other abort mechanism. The load had committed and
+    received initial data.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Committed.ReloadBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by reloading the page. The load had committed and received
+    initial data.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Committed.StopBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by pressing the stop button. The load had committed and
+    received initial data.
+  </summary>
+</histogram>
+
+<histogram
+    name="PageLoad.Timing2.Aborts.Provisional.BackgroundBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user faux-aborting the load
+    before its first paint by backgrounding the tab. The load was provisional
+    and had not received any data yet.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Provisional.CloseBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by closing the tab or browser. The load was provisional and
+    had not received any data yet.
+  </summary>
+</histogram>
+
+<histogram
+    name="PageLoad.Timing2.Aborts.Provisional.ForwardBackBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by going back/forward. The load was provisional and had not
+    received any data yet.
+  </summary>
+</histogram>
+
+<histogram
+    name="PageLoad.Timing2.Aborts.Provisional.NewNavigationBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by starting a new navigation. The load was provisional and
+    had not received any data yet.
+  </summary>
+</histogram>
+
+<histogram
+    name="PageLoad.Timing2.Aborts.Provisional.OtherAbortBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by some other abort mechanism. The load was provisional and
+    had not received any data yet.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Provisional.ReloadBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by reloading the page. The load was provisional and had not
+    received any data yet.
+  </summary>
+</histogram>
+
+<histogram name="PageLoad.Timing2.Aborts.Provisional.StopBeforeFirstPaint"
+    units="milliseconds">
+  <owner>csharrison@chromium.org</owner>
+  <summary>
+    Measures the time from navigation start to the user aborting the load before
+    its first paint by pressing the stop button. The load was provisional and
+    had not received any data yet.
+  </summary>
+</histogram>
+
 <histogram name="PageLoad.Timing2.NavigationToDOMContentLoadedEventFired"
     units="milliseconds">
   <owner>bmcquade@chromium.org</owner>