Update from chromium https://crrev.com/301315

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 312 matching lines @@
   source_set(target_name) {
     # Since we generate a file, we need to be run before the targets that
     # depend on us.
     sources = grit_outputs
 
     # Deps set on the template invocation will go on the grit script running
     # target rather than this library.
     deps = [ ":$grit_custom_target" ]
     public_configs = [ ":$grit_config" ]
 
+    if (defined(invoker.public_configs)) {
+      public_configs += invoker.public_configs
+    }
+
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
     output_name = grit_output_name
   }
 }