Validate GN substitutions in args and rsp files.

tools/gn/target_generator.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/target_generator.h"
 
 #include <stddef.h>
 
 #include "tools/gn/action_target_generator.h"
 #include "tools/gn/binary_target_generator.h"
@@ skipping 294 matching lines @@
     if (!outputs.required_types().empty()) {
       *err_ = Err(*value, "Source expansions not allowed here.",
           "The outputs of this target used source {{expansions}} but this "
           "target type\ndoesn't support them. Just express the outputs "
           "literally.");
       return false;
     }
   }
 
   // Check the substitutions used are valid for this purpose.
-  if (!EnsureValidSourcesSubstitutions(outputs.required_types(),
-                                       value->origin(), err_))
+  if (!EnsureValidSubstitutions(outputs.required_types(),
+                                &IsValidSourceSubstitution,
+                                value->origin(), err_))
     return false;
 
   // Validate that outputs are in the output dir.
   CHECK(outputs.list().size() == value->list_value().size());
   for (size_t i = 0; i < outputs.list().size(); i++) {
     if (!EnsureSubstitutionIsInOutputDir(outputs.list()[i],
                                          value->list_value()[i]))
       return false;
   }
   return true;
@@ skipping 71 matching lines @@
   if (err_->has_error())
     return false;
   if (!EnsureStringIsInOutputDir(GetBuildSettings()->build_dir(),
           source_file.value(), value->origin(), err_))
     return false;
   OutputFile output_file(GetBuildSettings(), source_file);
   target_->set_write_runtime_deps_output(output_file);
 
   return true;
 }