[Autofill][Slimshady] Add new fillable types to metrics enum.

Currently, the new types for structured last names are missing in the
enum definition to collect metrics.

Change-Id: Ic3eb6c6f335e97d45753c89689d1732003707658
Bug: 1099202
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2379677
Auto-Submit: Matthias Körber <koerber@google.com>
Commit-Queue: Christoph Schwering <schwering@google.com>
Reviewed-by: Christoph Schwering <schwering@google.com>
Cr-Commit-Position: refs/heads/master@{#802299}

tools/metrics/histograms/enums.xml

@@ -4799,6 +4799,14 @@ Unknown properties are collapsed to zero. -->
   <int value="1681" label="ADDRESS_HOME_FLOOR: accepted"/>
   <int value="1696" label="ADDRESS_HOME_OTHER_SUBUNIT: edited"/>
   <int value="1697" label="ADDRESS_HOME_OTHER_SUBUNIT: accepted"/>
+  <int value="1712" label="NAME_LAST_FIRST: edited"/>
+  <int value="1713" label="NAME_LAST_FIRST: accepted"/>
+  <int value="1728" label="NAME_LAST_CONJUNCTION: edited"/>
+  <int value="1729" label="NAME_LAST_CONJUNCTION: accepted"/>
+  <int value="1744" label="NAME_LAST_SECOND: edited"/>
+  <int value="1745" label="NAME_LAST_SECOND: accepted"/>
+  <int value="1760" label="NAME_HONORIFIC_PREFIX: edited"/>
+  <int value="1761" label="NAME_HONORIFIC_PREFIX: accepted"/>
 </enum>
 
 <enum name="AutofillExperimentId">