[Autofill] Log the number of profiles considered/removed during dedupe.

components/autofill/core/browser/autofill_metrics.h

Index: components/autofill/core/browser/autofill_metrics.h
diff --git a/components/autofill/core/browser/autofill_metrics.h b/components/autofill/core/browser/autofill_metrics.h
index e637fa550bdedcbdf055c1c6c81b97f11d465703..578586f3df0deda8e9df91e31682e36e017b5d98 100644
--- a/components/autofill/core/browser/autofill_metrics.h
+++ b/components/autofill/core/browser/autofill_metrics.h
@@ -639,6 +639,12 @@ class AutofillMetrics {
   // This should be called when parsing each form.
   static void LogParseFormTiming(const base::TimeDelta& duration);
 
+  // Log how many profiles were considered for the deduplication process.
+  static void LogNumberOfProfilesConsideredForDedupe(size_t num_considered);
+
+  // Log how many profiles were removed as part of the deduplication process.
+  static void LogNumberOfProfilesRemovedDuringDedupe(size_t num_removed);
+
   // Utility to autofill form events in the relevant histograms depending on
   // the presence of server and/or local data.
   class FormEventLogger {