PART1: Initiated the SignedSettings refactoring.

chrome/browser/chromeos/login/parallel_authenticator.cc

Index: chrome/browser/chromeos/login/parallel_authenticator.cc
diff --git a/chrome/browser/chromeos/login/parallel_authenticator.cc b/chrome/browser/chromeos/login/parallel_authenticator.cc
index 781f0901af078fb9ca0cd905973d8d36056233ef..51c3a1a61c5706e24e8f0c951274dbc51e99a8dd 100644
--- a/chrome/browser/chromeos/login/parallel_authenticator.cc
+++ b/chrome/browser/chromeos/login/parallel_authenticator.cc
@@ -105,7 +105,7 @@ ParallelAuthenticator::ParallelAuthenticator(LoginStatusConsumer* consumer)
 
 ParallelAuthenticator::~ParallelAuthenticator() {}
 
-bool ParallelAuthenticator::AuthenticateToLogin(
+void ParallelAuthenticator::AuthenticateToLogin(
     Profile* profile,
     const std::string& username,
     const std::string& password,
@@ -143,10 +143,9 @@ bool ParallelAuthenticator::AuthenticateToLogin(
       NewRunnableMethod(this,
                         &ParallelAuthenticator::LoadLocalaccount,
                         std::string(kLocalaccountFile)));
-  return true;
 }
 
-bool ParallelAuthenticator::CompleteLogin(Profile* profile,
+void ParallelAuthenticator::CompleteLogin(Profile* profile,
                                           const std::string& username,
                                           const std::string& password) {
   std::string canonicalized = Authenticator::Canonicalize(username);
@@ -188,7 +187,6 @@ bool ParallelAuthenticator::CompleteLogin(Profile* profile,
       NewRunnableMethod(this,
                         &ParallelAuthenticator::LoadLocalaccount,
                         std::string(kLocalaccountFile)));
-  return true;
 }
 
 bool ParallelAuthenticator::AuthenticateToUnlock(const std::string& username,