Use GN response files for devtools .grd

tools/gn/action_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/action_target_generator.h"
 
 #include "tools/gn/build_settings.h"
 #include "tools/gn/err.h"
 #include "tools/gn/filesystem_utils.h"
 #include "tools/gn/parse_tree.h"
@@ skipping 67 matching lines @@
                                      SUBSTITUTION_RSP_FILE_NAME) !=
       required_args_substitutions.end();
   if (target_->action_values().uses_rsp_file() && !has_rsp_file_name) {
     *err_ = Err(function_call_, "Missing {{response_file_name}} in args.",
         "This target defines response_file_contents but doesn't use\n"
         "{{response_file_name}} in the args, which means the response file\n"
         "will be unused.");
     return;
   }
   if (!target_->action_values().uses_rsp_file() && has_rsp_file_name) {
-    *err_ = Err(function_call_, "Missing response_file_content definition.",
+    *err_ = Err(function_call_, "Missing response_file_contents definition.",
         "This target uses {{response_file_name}} in the args, but does not\n"
-        "define response_file_content which means the response file\n"
+        "define response_file_contents which means the response file\n"
         "will be empty.");
     return;
   }
 }
 
 bool ActionTargetGenerator::FillScript() {
   // If this gets called, the target type requires a script, so error out
   // if it doesn't have one.
   const Value* value = scope_->GetValue(variables::kScript, true);
   if (!value) {
@@ skipping 75 matching lines @@
       *err_ = Err(function_call_,
           "action_foreach should have a pattern in the output.",
           "An action_foreach target should have a source expansion pattern in\n"
           "it to map source file to unique output file name. Otherwise, the\n"
           "build system can't determine when your script needs to be run.");
       return false;
     }
   }
   return true;
 }