[http2] Fix merge fiasco from #34693 (#34779)

test/core/end2end/tests/http2_stats.cc

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #include <functional>
+#include <memory>
 #include <string>
 #include <utility>
 
@@ -32,6 +33,7 @@
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/channel/context.h"
 #include "src/core/lib/channel/promise_based_filter.h"
+#include "src/core/lib/channel/tcp_tracer.h"
 #include "src/core/lib/config/core_configuration.h"
 #include "src/core/lib/gprpp/sync.h"
 #include "src/core/lib/gprpp/time.h"
@@ -80,6 +82,9 @@ class FakeCallTracer : public ClientCallTracer {
     }
 
     void RecordCancel(grpc_error_handle /*cancel_error*/) override {}
+    std::shared_ptr<TcpTracerInterface> StartNewTcpTrace() override {
+      return nullptr;
+    }
     void RecordEnd(const gpr_timespec& /*latency*/) override { delete this; }
     void RecordAnnotation(absl::string_view /*annotation*/) override {}
     void RecordAnnotation(const Annotation& /*annotation*/) override {}
@@ -155,6 +160,9 @@ class FakeServerCallTracer : public ServerCallTracer {
   void RecordReceivedDecompressedMessage(
       const SliceBuffer& /*recv_decompressed_message*/) override {}
   void RecordCancel(grpc_error_handle /*cancel_error*/) override {}
+  std::shared_ptr<TcpTracerInterface> StartNewTcpTrace() override {
+    return nullptr;
+  }
   void RecordReceivedTrailingMetadata(
       grpc_metadata_batch* /*recv_trailing_metadata*/) override {}