Adding components to dependencies on iOS.

components/version_info/BUILD.gn

 # Copyright 2015 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.
 
 import("//chrome/version.gni")
 
 if (is_ios) {
   declare_args() {
     # Path to the file used to override the version PATH level on iOS.
     # Default to ios/build/util/VERSION.
@@ skipping 19 matching lines @@
   visibility = [ ":version_info" ]
   template_file = "version_info_values.h.version"
   output = "$target_gen_dir/version_info_values.h"
 
   if (is_ios) {
     # iOS overrides PATCH level of the version with the value from the file
     # named by ios_version_path, however, this needs to be the last argument
     # to the version.py script, so it cannot be added to the sources variable
     # and instead need to be managed manually.
 
-    inputs += [ ios_extra_version_path ]
+    inputs = [
+      ios_extra_version_path,
+    ]
     extra_args = [
       "-f",
       rebase_path(ios_extra_version_path, root_build_dir),
     ]
   }
 }