[sync] Abstract most ProfileSyncService //chrome deps

components/sync_driver/fake_sync_client.cc

Index: components/sync_driver/fake_sync_client.cc
diff --git a/components/sync_driver/fake_sync_client.cc b/components/sync_driver/fake_sync_client.cc
index 1d45b44c7d5f34b77e48463c0388da5d04a3fda7..51e2b38aec1b917a6bb5c5395c830cc9dc938c4c 100644
--- a/components/sync_driver/fake_sync_client.cc
+++ b/components/sync_driver/fake_sync_client.cc
@@ -76,6 +76,10 @@ BookmarkUndoService* FakeSyncClient::GetBookmarkUndoServiceIfExists() {
   return nullptr;
 }
 
+invalidation::InvalidationService* FakeSyncClient::GetInvalidationService() {
+  return nullptr;
+}
+
 scoped_refptr<syncer::ExtensionsActivity>
 FakeSyncClient::GetExtensionsActivity() {
   return scoped_refptr<syncer::ExtensionsActivity>();