Sending autofill types for username fields in sign-in forms for improving username detection.

components/password_manager/core/browser/password_form_manager.h

Index: components/password_manager/core/browser/password_form_manager.h
diff --git a/components/password_manager/core/browser/password_form_manager.h b/components/password_manager/core/browser/password_form_manager.h
index 1cc924fbeefcce0f91c524245ffdfc81c5311645..0ad2261d268459037df09e440eb86b4fff015d44 100644
--- a/components/password_manager/core/browser/password_form_manager.h
+++ b/components/password_manager/core/browser/password_form_manager.h
@@ -24,6 +24,7 @@
 #include "components/password_manager/core/browser/password_manager_driver.h"
 #include "components/password_manager/core/browser/password_store.h"
 
+using autofill::FormData;
 using autofill::FormStructure;
 
 namespace password_manager {
@@ -440,6 +441,9 @@ class PasswordFormManager : public FormFetcher::Consumer {
   // Send appropriate votes based on what is currently being saved.
   void SendVotesOnSave();
 
+  // Send a vote for sign-in forms with autofill types for a username field.
+  void SendSignInVote(const FormData& form_data);
+
   // Sets |user_action_| and records some metrics.
   void SetUserAction(UserAction user_action);