gfe-relnote: Let GFE be able to use FIFO write scheduler in QUIC and enable it via a connection option FIFO. Protected by gfe2_reloadable_flag_quic_use_fifo_write_scheduler.

PiperOrigin-RevId: 261676376
Change-Id: I74a4d92ad6d612c565eaa1e38186738988d02fe5
diff --git a/spdy/core/spdy_protocol.cc b/spdy/core/spdy_protocol.cc
index d9b642f..9094b47 100644
--- a/spdy/core/spdy_protocol.cc
+++ b/spdy/core/spdy_protocol.cc
@@ -229,6 +229,20 @@
   return "UNKNOWN_ERROR_CODE";
 }
 
+const char* WriteSchedulerTypeToString(WriteSchedulerType type) {
+  switch (type) {
+    case WriteSchedulerType::LIFO:
+      return "LIFO";
+    case WriteSchedulerType::SPDY:
+      return "SPDY";
+    case WriteSchedulerType::HTTP2:
+      return "HTTP2";
+    case WriteSchedulerType::FIFO:
+      return "FIFO";
+  }
+  return "UNKNOWN";
+}
+
 size_t GetNumberRequiredContinuationFrames(size_t size) {
   DCHECK_GT(size, kHttp2MaxControlFrameSendSize);
   size_t overflow = size - kHttp2MaxControlFrameSendSize;