Rename source_prereqs to inputs in the GN build.

extensions/generated_extensions_api.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.
 
 # Defines a static library corresponding to the output of schema compiler tools
 # over a set of extensions API schemas (IDL or JSON format.) The library target
 # has implicit hard dependencies on all schema files listed by the invoker and
 # is itself a hard dependency.
 #
 # Invocations of this template may use the following variables:
@@ skipping 57 matching lines @@
     "$compiler_root/cpp_util.py",
     "$compiler_root/h_generator.py",
     "$compiler_root/idl_schema.py",
     "$compiler_root/model.py",
     "$compiler_root/util_cc_helper.py",
   ]
 
   schema_generator_name = target_name + "_schema_generator"
   action_foreach(schema_generator_name) {
     script = compiler_script
-    source_prereqs = compiler_sources
+    inputs = compiler_sources
     sources = schemas
     outputs = [
       "$target_gen_dir/{{source_name_part}}.cc",
       "$target_gen_dir/{{source_name_part}}.h",
     ]
     args = [
       "{{source}}",
       "--root=" + rebase_path("//", root_build_dir),
       "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
       "--namespace=$root_namespace",
       "--generator=cpp" ]
     visibility = target_visibility
   }
 
   if (bundle) {
     assert(defined(invoker.impl_dir),
            "\"impl_dir\" must be defined for the $target_name template.")
     impl_dir = invoker.impl_dir
 
     uncompiled_schemas = []
     if (defined(invoker.uncompiled_sources)) {
       uncompiled_schemas = invoker.uncompiled_sources
     }
 
     bundle_generator_name = target_name + "_bundle_generator"
     action(bundle_generator_name) {
       script = compiler_script
-      source_prereqs = compiler_sources + schemas + uncompiled_schemas
+      inputs = compiler_sources + schemas + uncompiled_schemas
       outputs = [
         "$target_gen_dir/generated_api.cc",
         "$target_gen_dir/generated_api.h",
         "$target_gen_dir/generated_schemas.cc",
         "$target_gen_dir/generated_schemas.h",
       ]
       args = [
         "--root=" + rebase_path("//", root_build_dir),
         "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
         "--namespace=$root_namespace",
@@ skipping 24 matching lines @@
     direct_dependent_configs = [ ":$generated_config_name" ]
 
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
     if (defined(invoker.output_name)) {
       output_name = invoker.output_name
     }
   }
 }