Extend DrmUtil UMAs.

This CL makes the following UMAs have the same expiration date since
they're all related:

DrmUtil.CreateDisplaySnapshot.BitsPerChannel
DrmUtil.CreateDisplaySnapshot.HasEdidBlob
DrmUtil.CreateDisplaySnapshot.IsHDR
DrmUtil.GetColorSpaceFromEdid.ChecksOutcome

Bug: 1153737
Change-Id: I2d426c9a5946e48b79e4badb97b5f0620231cdc3
Test: None
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2565660
Auto-Submit: Andres Calderon Jaramillo <andrescj@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#832370}

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

@@ -4534,7 +4534,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DrmUtil.CreateDisplaySnapshot.BitsPerChannel" units="bits"
-    expires_after="M89">
+    expires_after="2022-01-03">
   <owner>andrescj@chromium.org</owner>
   <owner>mcasas@chromium.org</owner>
   <owner>chromeos-gfx@google.com</owner>
@@ -4545,7 +4545,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DrmUtil.CreateDisplaySnapshot.HasEdidBlob" enum="Boolean"
-    expires_after="2021-04-18">
+    expires_after="2022-01-03">
   <owner>andrescj@chromium.org</owner>
   <owner>mcasas@chromium.org</owner>
   <owner>chromeos-gfx@google.com</owner>
@@ -4556,7 +4556,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DrmUtil.CreateDisplaySnapshot.IsHDR" enum="Boolean"
-    expires_after="M89">
+    expires_after="2022-01-03">
   <owner>andrescj@chromium.org</owner>
   <owner>mcasas@chromium.org</owner>
   <owner>chromeos-gfx@google.com</owner>