Improve GN public header file checking

tools/gn/input_conversion.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/input_conversion.h"
 
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "tools/gn/build_settings.h"
 #include "tools/gn/err.h"
@@ skipping 19 matching lines @@
                         const std::string& input,
                         ValueOrScope what,
                         const ParseNode* origin,
                         Err* err) {
   // The memory for these will be kept around by the input file manager
   // so the origin parse nodes for the values will be preserved.
   InputFile* input_file;
   std::vector<Token>* tokens;
   scoped_ptr<ParseNode>* parse_root_ptr;
   g_scheduler->input_file_manager()->AddDynamicInput(
-      &input_file, &tokens, &parse_root_ptr);
+      SourceFile(), &input_file, &tokens, &parse_root_ptr);
 
   input_file->SetContents(input);
   if (origin) {
     // This description will be the blame for any error messages caused by
     // script parsing or if a value is blamed. It will say
     // "Error at <...>:line:char" so here we try to make a string for <...>
     // that reads well in this context.
     input_file->set_friendly_name(
         "dynamically parsed input that " +
         origin->GetRange().begin().Describe(true) +
@@ skipping 157 matching lines @@
                           const ParseNode* origin,
                           const Value& input_conversion_value,
                           Err* err) {
   if (input_conversion_value.type() == Value::NONE)
     return Value();  // Allow null inputs to mean discard the result.
   if (!input_conversion_value.VerifyTypeIs(Value::STRING, err))
     return Value();
   return DoConvertInputToValue(settings, input, origin, input_conversion_value,
                                input_conversion_value.string_value(), err);
 }