diff --git a/src/gn/ninja_binary_target_writer.cc b/src/gn/ninja_binary_target_writer.cc
index 5fb8929..755d963 100644
--- a/src/gn/ninja_binary_target_writer.cc
+++ b/src/gn/ninja_binary_target_writer.cc
@@ -105,26 +105,6 @@
   return {stamp_file};
 }
 
-void NinjaBinaryTargetWriter::WriteSourceSetStamp(
-    const std::vector<OutputFile>& object_files) {
-  // The stamp rule for source sets is generally not used, since targets that
-  // depend on this will reference the object files directly. However, writing
-  // this rule allows the user to type the name of the target and get a build
-  // which can be convenient for development.
-  ClassifiedDeps classified_deps = GetClassifiedDeps();
-
-  // The classifier should never put extra object files in a source sets: any
-  // source sets that we depend on should appear in our non-linkable deps
-  // instead.
-  DCHECK(classified_deps.extra_object_files.empty());
-
-  std::vector<OutputFile> order_only_deps;
-  for (auto* dep : classified_deps.non_linkable_deps)
-    order_only_deps.push_back(dep->dependency_output_file());
-
-  WriteStampForTarget(object_files, order_only_deps);
-}
-
 NinjaBinaryTargetWriter::ClassifiedDeps
 NinjaBinaryTargetWriter::GetClassifiedDeps() const {
   ClassifiedDeps classified_deps;
diff --git a/src/gn/ninja_binary_target_writer.h b/src/gn/ninja_binary_target_writer.h
index c7b6eea..92ac5ee 100644
--- a/src/gn/ninja_binary_target_writer.h
+++ b/src/gn/ninja_binary_target_writer.h
@@ -42,9 +42,6 @@
   std::vector<OutputFile> WriteInputsStampAndGetDep(
       size_t num_stamp_uses) const;
 
-  // Writes the stamp line for a source set. These are not linked.
-  void WriteSourceSetStamp(const std::vector<OutputFile>& object_files);
-
   // Gets all target dependencies and classifies them, as well as accumulates
   // object files from source sets we need to link.
   ClassifiedDeps GetClassifiedDeps() const;
@@ -56,9 +53,6 @@
   void ClassifyDependency(const Target* dep,
                           ClassifiedDeps* classified_deps) const;
 
-  OutputFile WriteStampAndGetDep(const UniqueVector<const SourceFile*>& files,
-                                 const std::string& stamp_ext) const;
-
   void WriteCompilerBuildLine(const std::vector<SourceFile>& sources,
                               const std::vector<OutputFile>& extra_deps,
                               const std::vector<OutputFile>& order_only_deps,
diff --git a/src/gn/ninja_c_binary_target_writer.cc b/src/gn/ninja_c_binary_target_writer.cc
index da27df6..ec2e0bb 100644
--- a/src/gn/ninja_c_binary_target_writer.cc
+++ b/src/gn/ninja_c_binary_target_writer.cc
@@ -584,6 +584,26 @@
   out_ << std::endl;
 }
 
+void NinjaCBinaryTargetWriter::WriteSourceSetStamp(
+    const std::vector<OutputFile>& object_files) {
+  // The stamp rule for source sets is generally not used, since targets that
+  // depend on this will reference the object files directly. However, writing
+  // this rule allows the user to type the name of the target and get a build
+  // which can be convenient for development.
+  ClassifiedDeps classified_deps = GetClassifiedDeps();
+
+  // The classifier should never put extra object files in a source sets: any
+  // source sets that we depend on should appear in our non-linkable deps
+  // instead.
+  DCHECK(classified_deps.extra_object_files.empty());
+
+  std::vector<OutputFile> order_only_deps;
+  for (auto* dep : classified_deps.non_linkable_deps)
+    order_only_deps.push_back(dep->dependency_output_file());
+
+  WriteStampForTarget(object_files, order_only_deps);
+}
+
 void NinjaCBinaryTargetWriter::WriteLinkerStuff(
     const std::vector<OutputFile>& object_files,
     const std::vector<SourceFile>& other_files,
diff --git a/src/gn/ninja_c_binary_target_writer.h b/src/gn/ninja_c_binary_target_writer.h
index ab42985..17615cc 100644
--- a/src/gn/ninja_c_binary_target_writer.h
+++ b/src/gn/ninja_c_binary_target_writer.h
@@ -84,6 +84,9 @@
                          const std::vector<OutputFile>& order_only_deps,
                          std::vector<OutputFile>* object_files);
 
+  // Writes the stamp line for a source set. These are not linked.
+  void WriteSourceSetStamp(const std::vector<OutputFile>& object_files);
+
   void WriteLinkerStuff(const std::vector<OutputFile>& object_files,
                         const std::vector<SourceFile>& other_files,
                         const std::vector<OutputFile>& input_deps);