Rename functions with same names as generator in QUIC creator. This is preparation for combining creator and generator. Not protected.

gfe-relnote: n/a (functions renaming only)
PiperOrigin-RevId: 269341659
Change-Id: I9dbafc0f093ee88f4769e1d407445a2b4268b8df
diff --git a/quic/core/quic_dispatcher.cc b/quic/core/quic_dispatcher.cc
index b8e7f0c..a855482 100644
--- a/quic/core/quic_dispatcher.cc
+++ b/quic/core/quic_dispatcher.cc
@@ -142,7 +142,7 @@
       delete frame;
       return;
     }
-    creator_.Flush();
+    creator_.FlushCurrentPacket();
     DCHECK_EQ(1u, collector_.packets()->size());
     time_wait_list_manager_->AddConnectionIdToTimeWait(
         server_connection_id_, ietf_quic,