Creating a preference for storing a sync password hash.

chrome/browser/password_manager/password_store_proxy_mac.cc

Index: chrome/browser/password_manager/password_store_proxy_mac.cc
diff --git a/chrome/browser/password_manager/password_store_proxy_mac.cc b/chrome/browser/password_manager/password_store_proxy_mac.cc
index e82ebe5729aa24a01a56adfafabdda6e9752ccc2..84e950a5c7d94eda6f39c6f0d52c9e744cd4e5da 100644
--- a/chrome/browser/password_manager/password_store_proxy_mac.cc
+++ b/chrome/browser/password_manager/password_store_proxy_mac.cc
@@ -36,7 +36,8 @@ PasswordStoreProxyMac::~PasswordStoreProxyMac() {
 }
 
 bool PasswordStoreProxyMac::Init(
-    const syncer::SyncableService::StartSyncFlare& flare) {
+    const syncer::SyncableService::StartSyncFlare& flare,
+    PrefService* prefs) {
   // Set up a background thread.
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   thread_.reset(new base::Thread("Chrome_PasswordStore_Thread"));
@@ -51,7 +52,7 @@ bool PasswordStoreProxyMac::Init(
           static_cast<MigrationStatus>(migration_status_.GetValue()))))
     return false;
 
-  return password_manager::PasswordStore::Init(flare);
+  return password_manager::PasswordStore::Init(flare, prefs);
 }
 
 void PasswordStoreProxyMac::ShutdownOnUIThread() {