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PiperOrigin-RevId: 910409446

grammar_codegen/antlr_frontend.cc

diff --git a/grammar_codegen/antlr_frontend.cc b/grammar_codegen/antlr_frontend.cc
index 56c6ec3..e502148 100644
--- a/grammar_codegen/antlr_frontend.cc
+++ b/grammar_codegen/antlr_frontend.cc
@@ -14,15 +14,14 @@
 
 #include "./grammar_codegen/antlr_frontend.h"
 
-#include <fstream>
+#include <cstddef>
 #include <optional>
-#include <streambuf>
 #include <string>
+#include <utility>
 #include <variant>
 #include <vector>
 
 #include "absl/strings/ascii.h"
-#include "absl/strings/str_cat.h"
 #include "absl/strings/str_format.h"
 #include "absl/strings/string_view.h"
 #include "./common/logging.h"

grammar_codegen/backend.cc

diff --git a/grammar_codegen/backend.cc b/grammar_codegen/backend.cc
index 532318f..4f6f1dd 100644
--- a/grammar_codegen/backend.cc
+++ b/grammar_codegen/backend.cc
@@ -15,8 +15,10 @@
 #include "./grammar_codegen/backend.h"
 
 #include <cctype>
+#include <cstddef>
 #include <string>
 #include <utility>
+#include <variant>
 #include <vector>
 
 #include "absl/strings/ascii.h"