Refactor GN source expansions.

tools/gn/ninja_target_writer.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "tools/gn/ninja_target_writer.h"
 
 #include <fstream>
 #include <sstream>
 
 #include "base/file_util.h"
 #include "tools/gn/err.h"
-#include "tools/gn/file_template.h"
 #include "tools/gn/ninja_action_target_writer.h"
 #include "tools/gn/ninja_binary_target_writer.h"
 #include "tools/gn/ninja_copy_target_writer.h"
 #include "tools/gn/ninja_group_target_writer.h"
 #include "tools/gn/scheduler.h"
 #include "tools/gn/string_utils.h"
 #include "tools/gn/target.h"
 #include "tools/gn/trace.h"
 
 NinjaTargetWriter::NinjaTargetWriter(const Target* target,
@@ skipping 138 matching lines @@
   // Extra hard deps passed in.
   for (size_t i = 0; i < extra_hard_deps.size(); i++) {
     out_ << " ";
     path_output_.WriteFile(out_,
         helper_.GetTargetOutputFile(extra_hard_deps[i]));
   }
 
   out_ << "\n";
   return " | " + stamp_file_string;
 }