Separate sync and invalidation client IDs

sync/test/engine/syncer_command_test.h

Index: sync/test/engine/syncer_command_test.h
diff --git a/sync/test/engine/syncer_command_test.h b/sync/test/engine/syncer_command_test.h
index e177a872c6909c3720abdc4f09bf05f983cd9d4a..d531596d4c66095daf81b3643043ef33eb2285bf 100644
--- a/sync/test/engine/syncer_command_test.h
+++ b/sync/test/engine/syncer_command_test.h
@@ -128,7 +128,8 @@ class SyncerCommandTestBase : public testing::Test,
             std::vector<SyncEngineEventListener*>(),
             &mock_debug_info_getter_,
             &traffic_recorder_,
-            true  /* enable keystore encryption*/ ));
+            true,  // enable keystore encryption
+            "fake_invalidator_client_id"));
     context_->set_account_name(directory()->name());
     ClearSession();
   }