Hide the download summary on file open

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 4260595f0172c4a62cd5e092e4f70f6f59e1e3fb..d8275c8c16b1b5ca8ac39b86130383ea24d8fa95 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -29072,6 +29072,19 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="MobileDownload.Notification.FixingSummaryLeak"
+    enum="BooleanForegroundNotification">
+  <owner>dtrainor@chromium.org</owner>
+  <summary>
+    Android: Records the situation where we try to fix a standalone downloads
+    summary notification, which shouldn't be visible to the user.  True if the
+    notification was a foreground notification, in which case we can't dismiss
+    it and need to attempt a more drastic workaround. False if it was a normal
+    notification and we can dismiss it easily (this is okay and expected
+    behavior in some scenarios).
+  </summary>
+</histogram>
+
 <histogram name="MobileFre.Progress" enum="MobileFreProgress">
   <owner>gogerald@chromium.org</owner>
   <summary>
@@ -82471,6 +82484,11 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1" label="Force Disabled"/>
 </enum>
 
+<enum name="BooleanForegroundNotification" type="int">
+  <int value="0" label="Background Notification"/>
+  <int value="1" label="Foreground Notification"/>
+</enum>
+
 <enum name="BooleanForemost" type="int">
   <int value="0" label="Tab was not foremost"/>
   <int value="1" label="Tab was foremost"/>