[Sync] Removed passphrase helper methods, removed ((n)) pattern, and fixed lint violations.

chrome/browser/sync/test/integration/passwords_helper.h

Index: chrome/browser/sync/test/integration/passwords_helper.h
diff --git a/chrome/browser/sync/test/integration/passwords_helper.h b/chrome/browser/sync/test/integration/passwords_helper.h
index 6b1c5a9fc8f402f9c200d2400461d07225ec1679..dc76fa846a1fc9f3d9168224972878382a69e85e 100644
--- a/chrome/browser/sync/test/integration/passwords_helper.h
+++ b/chrome/browser/sync/test/integration/passwords_helper.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_SYNC_TEST_INTEGRATION_PASSWORDS_HELPER_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_PASSWORDS_HELPER_H_
 
+#include <memory>
 #include <vector>
 
 #include "base/memory/scoped_vector.h"
@@ -43,18 +44,6 @@ void RemoveLogin(password_manager::PasswordStore* store,
 // Removes all password forms from the password store |store|.
 void RemoveLogins(password_manager::PasswordStore* store);
 
-// Sets the cryptographer's encryption passphrase for the profile at index
-// |index| to |passphrase|, and passphrase type |type|.
-void SetEncryptionPassphrase(
-    int index,
-    const std::string& passphrase,
-    browser_sync::ProfileSyncService::PassphraseType type);
-
-// Sets the cryptographer's decryption passphrase for the profile at index
-// |index| to |passphrase|. Returns false if the operation failed, and true
-// otherwise.
-bool SetDecryptionPassphrase(int index, const std::string& passphrase);
-
 // Gets the password store of the profile with index |index|.
 password_manager::PasswordStore* GetPasswordStore(int index);