Rename source_prereqs to inputs in the GN build.

sandbox/mac/BUILD.gn

 # 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.
 
 component("sandbox") {
   sources = [
     "bootstrap_sandbox.cc",
     "bootstrap_sandbox.h",
     "launchd_interception_server.cc",
     "launchd_interception_server.h",
@@ skipping 19 matching lines @@
 generate_stubs_script = "//tools/generate_stubs/generate_stubs.py"
 generate_stubs_header = "xpc_stubs_header.fragment"
 generate_stubs_sig_public = "xpc_stubs.sig"
 generate_stubs_sig_private = "xpc_private_stubs.sig"
 generate_stubs_project = "sandbox/mac"
 generate_stubs_output_stem = "xpc_stubs"
 
 action("generate_stubs") {
   script = generate_stubs_script
   sources = [ generate_stubs_sig_public, generate_stubs_sig_private ]
-  source_prereqs = [ generate_stubs_header ]
+  inputs = [ generate_stubs_header ]
   outputs = [
     "$target_gen_dir/$generate_stubs_output_stem.cc",
     "$target_gen_dir/$generate_stubs_output_stem.h",
   ]
   args = [
     "-i", rebase_path(target_gen_dir, root_build_dir),
     "-o", rebase_path(target_gen_dir, root_build_dir),
     "-t", "posix_stubs",
     "-e", rebase_path(generate_stubs_header, root_build_dir),
     "-s", generate_stubs_output_stem,
@@ skipping 13 matching lines @@
     "Foundation.framework",
   ]
 
   deps = [
     ":sandbox",
     "//base",
     "//base/test:run_all_unittests",
     "//testing/gtest",
   ]
 }