Interface for sync password saving.

components/password_manager/core/browser/password_reuse_detector.h

Index: components/password_manager/core/browser/password_reuse_detector.h
diff --git a/components/password_manager/core/browser/password_reuse_detector.h b/components/password_manager/core/browser/password_reuse_detector.h
index 967c941a9cd9f3f97285f0ebb14b4ce7a4d200ad..e9766c8a737e5e7e01501349cc1c6edcd8642a6b 100644
--- a/components/password_manager/core/browser/password_reuse_detector.h
+++ b/components/password_manager/core/browser/password_reuse_detector.h
@@ -51,6 +51,9 @@ class PasswordReuseDetector : public PasswordStoreConsumer {
                   const std::string& domain,
                   PasswordReuseDetectorConsumer* consumer);
 
+  // Saves a hash of |password| for password reuse checking.
+  void SaveSyncPasswordHash(const base::string16& password);
+
  private:
   using passwords_iterator = std::map<base::string16,
                                       std::set<std::string>,