[Downloads] Remove externally deleted items from downloads history

tools/metrics/actions/actions.xml

Index: tools/metrics/actions/actions.xml
diff --git a/tools/metrics/actions/actions.xml b/tools/metrics/actions/actions.xml
index 097b9770914fc1f53fb957ef4d76d457166da63e..f2f1c5d1a2af065e5808f7772a3f471cb2044c17 100644
--- a/tools/metrics/actions/actions.xml
+++ b/tools/metrics/actions/actions.xml
@@ -921,6 +921,16 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
+<action name="Android.DownloadManager.CheckForExternallyRemovedItems">
+  <owner>dfalcantara@chromium.org</owner>
+  <owner>twellington@chromium.org</owner>
+  <owner>ianwen@chromium.org</owner>
+  <description>
+    A request was issued to check the file system for download items that were
+    externally deleted e.g. through a third-party download manager.
+  </description>
+</action>
+
 <action name="Android.DownloadManager.Delete">
   <owner>dfalcantara@chromium.org</owner>
   <owner>twellington@chromium.org</owner>
@@ -928,6 +938,16 @@ should be able to be added at any place in this file.
   <description>User deleted one or more download items.</description>
 </action>
 
+<action name="Android.DownloadManager.Item.ExternallyDeleted">
+  <owner>dfalcantara@chromium.org</owner>
+  <owner>twellington@chromium.org</owner>
+  <owner>ianwen@chromium.org</owner>
+  <description>
+    A download tracked by the Chrome download service was externally deleted
+    e.g. through a third-party download manager.
+  </description>
+</action>
+
 <action name="Android.DownloadManager.OpenDrawer">
   <owner>dfalcantara@chromium.org</owner>
   <owner>twellington@chromium.org</owner>
@@ -937,13 +957,12 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
-<action name="Android.DownloadManager.Share.Deleted">
+<action name="Android.DownloadManager.SelectionEstablished">
   <owner>dfalcantara@chromium.org</owner>
   <owner>twellington@chromium.org</owner>
   <owner>ianwen@chromium.org</owner>
   <description>
-    User tapped on the share button with only externally deleted download items
-    selected.
+    User established a long-press selection in Chrome's download manager.
   </description>
 </action>