diff --git a/quic/core/qpack/fuzzer/qpack_encoder_stream_receiver_fuzzer.cc b/quic/core/qpack/fuzzer/qpack_encoder_stream_receiver_fuzzer.cc
index 9991d9a..9b5fe11 100644
--- a/quic/core/qpack/fuzzer/qpack_encoder_stream_receiver_fuzzer.cc
+++ b/quic/core/qpack/fuzzer/qpack_encoder_stream_receiver_fuzzer.cc
@@ -22,14 +22,14 @@
   NoOpDelegate() : error_detected_(false) {}
   ~NoOpDelegate() override = default;
 
-  void OnInsertWithNameReference(bool is_static,
-                                 uint64_t name_index,
-                                 QuicStringPiece value) override {}
-  void OnInsertWithoutNameReference(QuicStringPiece name,
-                                    QuicStringPiece value) override {}
-  void OnDuplicate(uint64_t index) override {}
-  void OnSetDynamicTableCapacity(uint64_t capacity) override {}
-  void OnErrorDetected(QuicStringPiece error_message) override {
+  void OnInsertWithNameReference(bool /*is_static*/,
+                                 uint64_t /*name_index*/,
+                                 QuicStringPiece /*value*/) override {}
+  void OnInsertWithoutNameReference(QuicStringPiece /*name*/,
+                                    QuicStringPiece /*value*/) override {}
+  void OnDuplicate(uint64_t /*index*/) override {}
+  void OnSetDynamicTableCapacity(uint64_t /*capacity*/) override {}
+  void OnErrorDetected(QuicStringPiece /*error_message*/) override {
     error_detected_ = true;
   }
 
diff --git a/quic/core/qpack/qpack_decoder_test_utils.cc b/quic/core/qpack/qpack_decoder_test_utils.cc
index d19ae4a..d00e528 100644
--- a/quic/core/qpack/qpack_decoder_test_utils.cc
+++ b/quic/core/qpack/qpack_decoder_test_utils.cc
@@ -14,10 +14,10 @@
 namespace test {
 
 void NoopEncoderStreamErrorDelegate::OnEncoderStreamError(
-    QuicStringPiece error_message) {}
+    QuicStringPiece /*error_message*/) {}
 
 void NoopDecoderStreamSenderDelegate::WriteDecoderStreamData(
-    QuicStringPiece data) {}
+    QuicStringPiece /*data*/) {}
 
 TestHeadersHandler::TestHeadersHandler()
     : decoding_completed_(false), decoding_error_detected_(false) {}
@@ -38,7 +38,7 @@
 }
 
 void TestHeadersHandler::OnDecodingErrorDetected(
-    QuicStringPiece error_message) {
+    QuicStringPiece /*error_message*/) {
   ASSERT_FALSE(decoding_completed_);
   ASSERT_FALSE(decoding_error_detected_);
 
diff --git a/quic/core/qpack/qpack_decoder_test_utils.h b/quic/core/qpack/qpack_decoder_test_utils.h
index 55761b6..7cc684c 100644
--- a/quic/core/qpack/qpack_decoder_test_utils.h
+++ b/quic/core/qpack/qpack_decoder_test_utils.h
@@ -96,9 +96,10 @@
  public:
   ~NoOpHeadersHandler() override = default;
 
-  void OnHeaderDecoded(QuicStringPiece name, QuicStringPiece value) override {}
+  void OnHeaderDecoded(QuicStringPiece /*name*/,
+                       QuicStringPiece /*value*/) override {}
   void OnDecodingCompleted() override {}
-  void OnDecodingErrorDetected(QuicStringPiece error_message) override {}
+  void OnDecodingErrorDetected(QuicStringPiece /*error_message*/) override {}
 };
 
 void QpackDecode(
diff --git a/quic/core/qpack/qpack_encoder.cc b/quic/core/qpack/qpack_encoder.cc
index 09c4286..2c1e453 100644
--- a/quic/core/qpack/qpack_encoder.cc
+++ b/quic/core/qpack/qpack_encoder.cc
@@ -35,15 +35,15 @@
   decoder_stream_receiver_.Decode(data);
 }
 
-void QpackEncoder::OnInsertCountIncrement(uint64_t increment) {
+void QpackEncoder::OnInsertCountIncrement(uint64_t /*increment*/) {
   // TODO(bnc): Implement dynamic table management for encoding.
 }
 
-void QpackEncoder::OnHeaderAcknowledgement(QuicStreamId stream_id) {
+void QpackEncoder::OnHeaderAcknowledgement(QuicStreamId /*stream_id*/) {
   // TODO(bnc): Implement dynamic table management for encoding.
 }
 
-void QpackEncoder::OnStreamCancellation(QuicStreamId stream_id) {
+void QpackEncoder::OnStreamCancellation(QuicStreamId /*stream_id*/) {
   // TODO(bnc): Implement dynamic table management for encoding.
 }
 
diff --git a/quic/core/qpack/qpack_encoder_test_utils.cc b/quic/core/qpack/qpack_encoder_test_utils.cc
index dd1ccb3..a58b0ae 100644
--- a/quic/core/qpack/qpack_encoder_test_utils.cc
+++ b/quic/core/qpack/qpack_encoder_test_utils.cc
@@ -10,10 +10,10 @@
 namespace test {
 
 void NoopDecoderStreamErrorDelegate::OnDecoderStreamError(
-    QuicStringPiece error_message) {}
+    QuicStringPiece /*error_message*/) {}
 
 void NoopEncoderStreamSenderDelegate::WriteEncoderStreamData(
-    QuicStringPiece data) {}
+    QuicStringPiece /*data*/) {}
 
 std::string QpackEncode(
     QpackEncoder::DecoderStreamErrorDelegate* decoder_stream_error_delegate,
diff --git a/quic/core/qpack/qpack_instruction_encoder.cc b/quic/core/qpack/qpack_instruction_encoder.cc
index 3ae38f6..0da9567 100644
--- a/quic/core/qpack/qpack_instruction_encoder.cc
+++ b/quic/core/qpack/qpack_instruction_encoder.cc
@@ -107,7 +107,7 @@
   state_ = State::kStartField;
 }
 
-size_t QpackInstructionEncoder::DoVarintStart(size_t max_encoded_bytes,
+size_t QpackInstructionEncoder::DoVarintStart(size_t /*max_encoded_bytes*/,
                                               std::string* output) {
   DCHECK(field_->type == QpackInstructionFieldType::kVarint ||
          field_->type == QpackInstructionFieldType::kVarint2 ||
diff --git a/quic/core/qpack/qpack_receive_stream.cc b/quic/core/qpack/qpack_receive_stream.cc
index 1cf2060..f0c4a3d 100644
--- a/quic/core/qpack/qpack_receive_stream.cc
+++ b/quic/core/qpack/qpack_receive_stream.cc
@@ -10,7 +10,7 @@
 QpackReceiveStream::QpackReceiveStream(PendingStream* pending)
     : QuicStream(pending, READ_UNIDIRECTIONAL, /*is_static=*/true) {}
 
-void QpackReceiveStream::OnStreamReset(const QuicRstStreamFrame& frame) {
+void QpackReceiveStream::OnStreamReset(const QuicRstStreamFrame& /*frame*/) {
   // TODO(renjietang) Change the error code to H/3 specific
   // HTTP_CLOSED_CRITICAL_STREAM.
   session()->connection()->CloseConnection(
diff --git a/quic/core/qpack/qpack_send_stream.cc b/quic/core/qpack/qpack_send_stream.cc
index 620ab2b..75b9c57 100644
--- a/quic/core/qpack/qpack_send_stream.cc
+++ b/quic/core/qpack/qpack_send_stream.cc
@@ -15,7 +15,7 @@
       stream_type_(stream_type),
       stream_type_sent_(false) {}
 
-void QpackSendStream::OnStreamReset(const QuicRstStreamFrame& frame) {
+void QpackSendStream::OnStreamReset(const QuicRstStreamFrame& /*frame*/) {
   // TODO(renjietang) Change the error code to H/3 specific
   // HTTP_CLOSED_CRITICAL_STREAM.
   session()->connection()->CloseConnection(