Refactor sync notifier out of sync api.

chrome/browser/sync/engine/syncapi.h

Index: chrome/browser/sync/engine/syncapi.h
diff --git a/chrome/browser/sync/engine/syncapi.h b/chrome/browser/sync/engine/syncapi.h
index 36297936466920c187f79fd46877906fe8f7db31..830f0774cc7faf9f541949e58012ce314285cd5b 100644
--- a/chrome/browser/sync/engine/syncapi.h
+++ b/chrome/browser/sync/engine/syncapi.h
@@ -65,10 +65,6 @@ struct SyncSessionSnapshot;
 }
 }
 
-namespace notifier {
-struct NotifierOptions;
-}
-
 // Forward declarations of internal class types so that sync API objects
 // may have opaque pointers to these types.
 namespace syncable {
@@ -853,7 +849,6 @@ class SyncManager {
             browser_sync::ModelSafeWorkerRegistrar* registrar,
             const char* user_agent,
             const SyncCredentials& credentials,
-            const notifier::NotifierOptions& notifier_options,
             const std::string& restored_key_for_bootstrapping,
             bool setup_for_test_mode);