Extend context menu histogram.

Fixed: 1089369
Change-Id: I5c6a2eccee34ba5dbb6b4ea2ea6b003f86525f12
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2442896
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Steven Holte <holte@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Auto-Submit: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813900}

tools/metrics/histograms/histograms_xml/others/histograms.xml

@@ -11346,8 +11346,9 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="RenderViewContextMenu.Shown" enum="RenderViewContextMenuItem"
-    expires_after="M85">
+    expires_after="M95">
   <owner>avi@chromium.org</owner>
+  <owner>edwardjung@chromium.org</owner>
   <owner>mpearson@chromium.org</owner>
   <summary>Count of renderer view context menu items shown.</summary>
 </histogram>