[Password Manager] Disable saving and filling on sync signup

components/password_manager/core/browser/password_manager_client.h

Index: components/password_manager/core/browser/password_manager_client.h
diff --git a/components/password_manager/core/browser/password_manager_client.h b/components/password_manager/core/browser/password_manager_client.h
index e1c765e4507554816cc5d0807f9f96572f568ca6..a3579e789aef850fb55c8b77814be6d6ce54e64a 100644
--- a/components/password_manager/core/browser/password_manager_client.h
+++ b/components/password_manager/core/browser/password_manager_client.h
@@ -30,6 +30,10 @@ class PasswordManagerClient {
   // The default return value is false.
   virtual bool IsAutomaticPasswordSavingEnabled() const;
 
+  // If the password manager should work for the current page. Default
+  // always returns true.
+  virtual bool IsPasswordManagerEnabledForCurrentPage() const;
+
   // Informs the embedder of a password form that can be saved if the user
   // allows it. The embedder is not required to prompt the user if it decides
   // that this form doesn't need to be saved.