Extract abstract base to API directory for ProfileSyncService.

chrome/browser/ui/autofill/tab_autofill_manager_delegate.cc

Index: chrome/browser/ui/autofill/tab_autofill_manager_delegate.cc
diff --git a/chrome/browser/ui/autofill/tab_autofill_manager_delegate.cc b/chrome/browser/ui/autofill/tab_autofill_manager_delegate.cc
index 3562ea7b0f6f01d417420193fc4319b304e6d04a..e18cb342c1f8f14db735db6e263669ed01587515 100644
--- a/chrome/browser/ui/autofill/tab_autofill_manager_delegate.cc
+++ b/chrome/browser/ui/autofill/tab_autofill_manager_delegate.cc
@@ -10,6 +10,8 @@
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
@@ -41,6 +43,10 @@ PrefServiceBase* TabAutofillManagerDelegate::GetPrefs() {
   return tab_->profile()->GetPrefs();
 }
 
+ProfileSyncServiceBase* TabAutofillManagerDelegate::GetProfileSyncService() {
+  return ProfileSyncServiceFactory::GetForProfile(tab_->profile());
+}
+
 bool TabAutofillManagerDelegate::IsSavingPasswordsEnabled() const {
   return tab_->password_manager()->IsSavingEnabled();
 }