Convert Pass()→std::move() for Mac build.

chrome/browser/password_manager/password_store_factory.cc

Index: chrome/browser/password_manager/password_store_factory.cc
diff --git a/chrome/browser/password_manager/password_store_factory.cc b/chrome/browser/password_manager/password_store_factory.cc
index 6730ae95db11cf1f2bbafad8915eec86becf22d4..484f071bb5d4451f5d7821e5c645b7df5f7fcbb2 100644
--- a/chrome/browser/password_manager/password_store_factory.cc
+++ b/chrome/browser/password_manager/password_store_factory.cc
@@ -171,8 +171,8 @@ PasswordStoreFactory::BuildServiceInstanceFor(
           os_crypt::switches::kUseMockKeychain)
           ? new crypto::MockAppleKeychain()
           : new crypto::AppleKeychain());
-  ps = new PasswordStoreProxyMac(main_thread_runner, keychain.Pass(),
-                                 login_db.Pass(), profile->GetPrefs());
+  ps = new PasswordStoreProxyMac(main_thread_runner, std::move(keychain),
+                                 std::move(login_db), profile->GetPrefs());
 #elif defined(OS_CHROMEOS) || defined(OS_ANDROID)
   // For now, we use PasswordStoreDefault. We might want to make a native
   // backend for PasswordStoreX (see below) in the future though.