Extend the life of Platform.TPM.*ErrorCode histograms

BUG=b:175781791

Change-Id: I3d2769f53b051cf8e9ac45582ba394627cf73217
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2599560
Auto-Submit: Yi Chou <yich@google.com>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Yi Chou <yich@google.com>
Cr-Commit-Position: refs/heads/master@{#839695}

tools/metrics/histograms/histograms_xml/platform/histograms.xml

@@ -1136,8 +1136,9 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Platform.TPM.AuthErrorCode" enum="TPMResultCodeEnum"
-    expires_after="M85">
-  <owner>semenzato@chromium.org</owner>
+    expires_after="2021-12-21">
+  <owner>yich@google.com</owner>
+  <owner>cros-hwsec-userland-eng+uma@chromium.org</owner>
   <summary>
     Each sample is the result code of a TPM authorized command issued through
     tcsd. Success is 0. For the other error codes, see
@@ -1166,8 +1167,9 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Platform.TPM.ErrorCode" enum="TPMResultCodeEnum"
-    expires_after="M85">
-  <owner>semenzato@chromium.org</owner>
+    expires_after="2021-12-21">
+  <owner>yich@google.com</owner>
+  <owner>cros-hwsec-userland-eng+uma@chromium.org</owner>
   <summary>
     Each sample is the result code of a TPM command issued through tcsd. Success
     is 0. For the other error codes, see /usr/include/tss/tpm_error.h.