Extend to-be-expired histograms.

Extend the expiry data of this histograms of splitview.

Bug: 1144814, 1144813, 1144808, 1144807, 1144806
Change-Id: If22e506af928b71834fa6db64123c6d442fe997e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2543082
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828256}
diff --git a/tools/metrics/histograms/histograms_xml/ash/histograms.xml b/tools/metrics/histograms/histograms_xml/ash/histograms.xml
index 8c066fe..0ce8feb 100644
--- a/tools/metrics/histograms/histograms_xml/ash/histograms.xml
+++ b/tools/metrics/histograms/histograms_xml/ash/histograms.xml
@@ -69,7 +69,7 @@
 </histogram>
 
 <histogram name="Ash.Accelerators.WindowSnap"
-    enum="WindowSnapAcceleratorAction" expires_after="2020-12-12">
+    enum="WindowSnapAcceleratorAction" expires_after="2021-12-12">
   <owner>amusbach@chromium.org</owner>
   <owner>xdai@chromium.org</owner>
   <summary>Captures usage of Alt+[ and Alt+].</summary>
@@ -1133,7 +1133,7 @@
 </histogram>
 
 <histogram name="Ash.Overview.WindowDrag.Workflow" enum="OverviewDragAction"
-    expires_after="2020-12-12">
+    expires_after="2021-12-12">
   <owner>amusbach@chromium.org</owner>
   <owner>xdai@chromium.org</owner>
   <summary>
@@ -1612,7 +1612,7 @@
 </histogram>
 
 <histogram name="Ash.SplitView.TimeInMultiDisplaySplitView" units="ms"
-    expires_after="2020-12-12">
+    expires_after="2021-12-12">
   <owner>amusbach@chromium.org</owner>
   <owner>xdai@chromium.org</owner>
   <summary>
@@ -1657,7 +1657,7 @@
 </histogram>
 
 <histogram base="true" name="Ash.SplitViewResize.PresentationTime.MaxLatency"
-    units="ms" expires_after="2020-12-12">
+    units="ms" expires_after="2021-12-12">
 <!-- Name completed by histogram_suffixes name="SplitViewResizeModes" -->
 
   <owner>amusbach@chromium.org</owner>