Add grit resource ID file to GN grit script inputs.

build/secondary/tools/grit/grit_rule.gni

 # Copyright 2014 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.
 
 # Instantiate grit. This will produce a script target to run grit, and a
 # static library that compiles the .cc files.
 #
 # Parameters
 #
 #   source (required)
@@ skipping 281 matching lines @@
   ]
 }
 
 grit_resource_id_file = "//tools/gritsettings/resource_ids"
 grit_info_script = "//tools/grit/grit_info.py"
 
 template("grit") {
   assert(defined(invoker.source),
          "\"source\" must be defined for the grit template $target_name")
 
+  grit_inputs = [ invoker.source ]
+
   if (defined(invoker.resource_ids)) {
     resource_ids = invoker.resource_ids
   } else {
     resource_ids = grit_resource_id_file
   }
+  grit_inputs += [ resource_ids ]  # Script depends on ID file.
 
   if (defined(invoker.output_dir)) {
     output_dir = invoker.output_dir
   } else {
     output_dir = target_gen_dir
   }
 
   if (defined(invoker.output_name)) {
     grit_output_name = invoker.output_name
   } else {
     grit_output_name = target_name
   }
 
   # These are all passed as arguments to the script so have to be relative to
   # the build directory.
   if (resource_ids != "") {
     resource_ids = rebase_path(resource_ids, root_build_dir)
   }
   rebased_output_dir = rebase_path(output_dir, root_build_dir)
   source_path = rebase_path(invoker.source, root_build_dir)
 
   if (defined(invoker.grit_flags)) {
     grit_flags = invoker.grit_flags
   } else {
     grit_flags = []  # These are optional so default to empty list.
   }
 
-  grit_inputs = [ invoker.source ]
-
   assert_files_flags = []
 
   # We want to make sure the declared outputs actually match what Grit is
   # writing. We write the list to a file (some of the output lists are long
   # enough to not fit on a Windows command line) and ask Grit to verify those
   # are the actual outputs at runtime.
   asserted_list_file =
       "$target_out_dir/${grit_output_name}_expected_outputs.txt"
   write_file(asserted_list_file,
              rebase_path(invoker.outputs, root_build_dir, output_dir))
@@ skipping 120 matching lines @@
     if (defined(invoker.configs)) {
       configs += invoker.configs
     }
 
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
     output_name = grit_output_name
   }
 }