Optionally compute grit inputs precisely.

third_party/google_input_tools/closure.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.
 
 template("build_closure") {
   assert(defined(invoker.sources))
   assert(defined(invoker.target))
-  action_name = target_name + "_js_gen"
-  action(action_name) {
+  action(target_name) {
     script = "//third_party/google_input_tools/builder.py"
     sources = invoker.sources
     outputs = [
       invoker.target,
     ]
     args = [
       "--target",
       rebase_path(invoker.target, root_build_dir),
     ]
     if (defined(invoker.json_file)) {
@@ skipping 12 matching lines @@
       # from the command line.
       args += [ "--sources" ] + sources
     }
     if (defined(invoker.path)) {
       args += [
         "--path",
         invoker.path,
       ]
     }
   }
-  group(target_name) {
-    deps = [
-      ":$action_name",
-    ]
-  }
 }