Rename source_prereqs to inputs in the GN build.

build/secondary/tools/grit/repack.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.
 
 # This file defines a template to invoke grit repack in a consistent manner.
 #
 # Parameters:
 #   sources  [required]
 #       List of pak files that need to be combined.
 #
@@ skipping 10 matching lines @@
   action(target_name) {
     assert(defined(invoker.sources), "Need sources for $target_name")
     assert(defined(invoker.output), "Need output for $target_name")
 
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
 
     script = "//tools/grit/grit/format/repack.py"
 
-    source_prereqs = invoker.sources
+    inputs = invoker.sources
     outputs = [ invoker.output ]
 
     args = []
     if (defined(invoker.repack_options)) {
       args += invoker.repack_options
     }
     args += [ rebase_path(invoker.output, root_build_dir) ]
     args += rebase_path(invoker.sources, root_build_dir)
 
     if (defined(invoker.deps)) {
       deps = invoker.deps
     }
   }
 }