Replace QuicheStrCat() with absl::StrCat()

PiperOrigin-RevId: 345546830
Change-Id: Ia05b89070965c2fd3322f45ae8498f2d7d72de42
diff --git a/spdy/core/fifo_write_scheduler.h b/spdy/core/fifo_write_scheduler.h
index 7b31891..026699f 100644
--- a/spdy/core/fifo_write_scheduler.h
+++ b/spdy/core/fifo_write_scheduler.h
@@ -9,7 +9,7 @@
 #include <set>
 #include <string>
 
-#include "net/third_party/quiche/src/common/platform/api/quiche_str_cat.h"
+#include "absl/strings/str_cat.h"
 #include "net/third_party/quiche/src/spdy/core/write_scheduler.h"
 #include "net/third_party/quiche/src/spdy/platform/api/spdy_string_utils.h"
 
@@ -232,7 +232,7 @@
 
 template <typename StreamIdType>
 std::string FifoWriteScheduler<StreamIdType>::DebugString() const {
-  return quiche::QuicheStrCat(
+  return absl::StrCat(
       "FifoWriteScheduler {num_streams=", registered_streams_.size(),
       " num_ready_streams=", NumReadyStreams(), "}");
 }