Remove legacy StartsWithASCII function.

components/password_manager/core/browser/password_form_manager.cc

Index: components/password_manager/core/browser/password_form_manager.cc
diff --git a/components/password_manager/core/browser/password_form_manager.cc b/components/password_manager/core/browser/password_form_manager.cc
index 7815782266219179c740fe28505188a680fb7a37..f6738f8c8622ff88b0c6dfbfbbbc60c8a71cf752 100644
--- a/components/password_manager/core/browser/password_form_manager.cc
+++ b/components/password_manager/core/browser/password_form_manager.cc
@@ -170,7 +170,7 @@ PasswordFormManager::MatchResultMask PasswordFormManager::DoesManage(
     origins_match =
         observed_form_.origin.host() == form.origin.host() &&
         observed_form_.origin.port() == form.origin.port() &&
-        base::StartsWithASCII(new_path, old_path, /*case_sensitive=*/true);
+        base::StartsWith(new_path, old_path, base::CompareCase::SENSITIVE);
   }
 
   if (!origins_match)
@@ -400,7 +400,8 @@ void PasswordFormManager::OnRequestDone(
       // instead of explicitly handling empty path matches.
       bool is_credential_protected =
           observed_form_.scheme == PasswordForm::SCHEME_HTML &&
-          base::StartsWithASCII("/", login->origin.path(), true) &&
+          base::StartsWith("/", login->origin.path(),
+                           base::CompareCase::SENSITIVE) &&
           credential_scores[i] > 0 && !login->blacklisted_by_user;
       // Passwords generated on a signup form must show on a login form even if
       // there are better-matching saved credentials. TODO(gcasto): We don't