🎊 Reland #2 of Have build_config targets depend only on other build_config targets

build/android/gyp/write_build_config.py

 #!/usr/bin/env python
 #
 # 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.
 
 """Writes a build_config file.
 
 The build_config file for a target is a json file containing information about
 how to build that target based on the target's dependencies. This includes
@@ skipping 182 matching lines @@
 
 
 def main(argv):
   parser = optparse.OptionParser()
   build_utils.AddDepfileOption(parser)
   parser.add_option('--build-config', help='Path to build_config output.')
   parser.add_option(
       '--type',
       help='Type of this target (e.g. android_library).')
   parser.add_option(
-      '--possible-deps-configs',
-      help='List of paths for dependency\'s build_config files. Some '
-      'dependencies may not write build_config files. Missing build_config '
-      'files are handled differently based on the type of this target.')
+      '--deps-configs',
+      help='List of paths for dependency\'s build_config files. ')
 
   # android_resources options
   parser.add_option('--srcjar', help='Path to target\'s resources srcjar.')
   parser.add_option('--resources-zip', help='Path to target\'s resources zip.')
   parser.add_option('--r-text', help='Path to target\'s R.txt file.')
   parser.add_option('--package-name',
       help='Java package name for these resources.')
   parser.add_option('--android-manifest', help='Path to android manifest.')
   parser.add_option('--is-locale-resource', action='store_true',
                     help='Whether it is locale resource.')
@@ skipping 66 matching lines @@
   build_utils.CheckOptions(options, parser, required_options)
 
   if options.type == 'java_library':
     if options.supports_android and not options.dex_path:
       raise Exception('java_library that supports Android requires a dex path.')
 
     if options.requires_android and not options.supports_android:
       raise Exception(
           '--supports-android is required when using --requires-android')
 
-  possible_deps_config_paths = build_utils.ParseGypList(
-      options.possible_deps_configs)
-
-  unknown_deps = [
-      c for c in possible_deps_config_paths if not os.path.exists(c)]
-
-  direct_deps_config_paths = [
-      c for c in possible_deps_config_paths if not c in unknown_deps]
+  direct_deps_config_paths = build_utils.ParseGypList(options.deps_configs)
   direct_deps_config_paths = _FilterUnwantedDepsPaths(direct_deps_config_paths,
                                                       options.type)
 
   deps = Deps(direct_deps_config_paths)
   all_inputs = deps.AllConfigPaths() + build_utils.GetPythonDependencies()
 
   # Remove other locale resources if there is alternative_locale_resource in
   # direct deps.
   if options.has_alternative_locale_resource:
     alternative = [r['path'] for r in deps.Direct('android_resources')
@@ skipping 249 matching lines @@
         _MergeAssets(deps.All('android_assets')))
 
   build_utils.WriteJson(config, options.build_config, only_if_changed=True)
 
   if options.depfile:
     build_utils.WriteDepfile(options.depfile, all_inputs)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))