Updates VEIDs for Proactive Suggestions.

Improves readability of UMA dashboard.

Bug: b:144875278
Change-Id: Id5493c5d0060e4fca7b2956ab87fa5c1775ce4e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2055995Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Commit-Queue: David Black <dmblack@google.com>
Cr-Commit-Position: refs/heads/master@{#741589}

tools/metrics/histograms/enums.xml

@@ -52867,6 +52867,9 @@ Called by update_net_trust_anchors.py.-->
   <int value="76954" label="kRelatedNewsVideoCard"/>
   <int value="76955" label="kRelatedPageCard"/>
   <int value="76958" label="kRelatedYoutubeVideoCard"/>
+  <int value="77131" label="kRoot"/>
+  <int value="87972" label="kRelatedPageList"/>
+  <int value="87973" label="kRelatedNewsTimelineList"/>
 </enum>
 
 <enum name="ProbeResult">