Revert "Start the migration of passwords from the Keychain."

components/password_manager/core/browser/password_store_default.h

Index: components/password_manager/core/browser/password_store_default.h
diff --git a/components/password_manager/core/browser/password_store_default.h b/components/password_manager/core/browser/password_store_default.h
index 3218de3ea6001d5ca57e37c28a1fde891f7ac8fb..c8d076f2fa9eb4ebc0c5e76df050e9690998035a 100644
--- a/components/password_manager/core/browser/password_store_default.h
+++ b/components/password_manager/core/browser/password_store_default.h
@@ -68,10 +68,6 @@ class PasswordStoreDefault : public PasswordStore {
     return login_db_->DeleteAndRecreateDatabaseFile();
   }
 
-  void set_login_db(scoped_ptr<password_manager::LoginDatabase> login_db) {
-    login_db_.swap(login_db);
-  }
-
  private:
   // Resets |login_db_| on the background thread.
   void ResetLoginDB();