[Autofill] Log the number of autofill profiles available at form submission

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 37800973dd96b710a590e3866419be445e9a4aea..e0aeab8d2c666a1bf3ecf77090a4177a55299ea8 100644
--- a/components/autofill/core/browser/autofill_metrics.h
+++ b/components/autofill/core/browser/autofill_metrics.h
@@ -423,6 +423,11 @@ class AutofillMetrics {
   // This should be called each time a new profile is launched.
   static void LogStoredProfileCount(size_t num_profiles);
 
+  // Log the number of profiles available when an autofillable form is
+  // submitted.
+  static void LogNumberOfProfilesAtAutofillableFormSubmission(
+      size_t num_profiles);
+
   // Log the number of Autofill suggestions presented to the user when filling a
   // form.
   static void LogAddressSuggestionsCount(size_t num_suggestions);