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

components/autofill/core/browser/autofill_metrics.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_METRICS_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_METRICS_H_
 
 #include <stddef.h>
 #include <string>
 
@@ skipping 405 matching lines @@
 
   // This should be called each time a page containing forms is loaded.
   static void LogIsAutofillEnabledAtPageLoad(bool enabled);
 
   // This should be called each time a new profile is launched.
   static void LogIsAutofillEnabledAtStartup(bool enabled);
 
   // 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);
 
   // Utility to autofill form events in the relevant histograms depending on
   // the presence of server and/or local data.
   class FormEventLogger {
    public:
     FormEventLogger(bool is_for_credit_card);
 
@@ skipping 20 matching lines @@
     bool has_logged_interacted_;
   };
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(AutofillMetrics);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_METRICS_H_