Android Add java_group() template to GN

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 75 matching lines @@
 def DepsOfType(wanted_type, configs):
   return [c for c in configs if c['type'] == wanted_type]
 
 
 def GetAllDepsConfigsInOrder(deps_config_paths):
   def GetDeps(path):
     return set(GetDepConfig(path)['deps_configs'])
   return build_utils.GetSortedTransitiveDependencies(deps_config_paths, GetDeps)
 
 
+def ResolveGroups(configs):
+  while True:
+    groups = DepsOfType('group', configs)
+    if not groups:
+      return configs
+    for config in groups:
+      index = configs.index(config)
+      expanded_configs = [GetDepConfig(p) for p in config['deps_configs']]
+      configs[index:index + 1] = expanded_configs
+
+
 class Deps(object):
   def __init__(self, direct_deps_config_paths):
     self.all_deps_config_paths = GetAllDepsConfigsInOrder(
         direct_deps_config_paths)
-    self.direct_deps_configs = [
-        GetDepConfig(p) for p in direct_deps_config_paths]
+    self.direct_deps_configs = ResolveGroups(
+        [GetDepConfig(p) for p in direct_deps_config_paths])
     self.all_deps_configs = [
         GetDepConfig(p) for p in self.all_deps_config_paths]
     self.direct_deps_config_paths = direct_deps_config_paths
 
   def All(self, wanted_type=None):
     if type is None:
       return self.all_deps_configs
     return DepsOfType(wanted_type, self.all_deps_configs)
 
   def Direct(self, wanted_type=None):
@@ skipping 125 matching lines @@
   if args:
     parser.error('No positional arguments should be given.')
 
   required_options_map = {
       'java_binary': ['build_config', 'jar_path'],
       'java_library': ['build_config', 'jar_path'],
       'android_assets': ['build_config'],
       'android_resources': ['build_config', 'resources_zip'],
       'android_apk': ['build_config', 'jar_path', 'dex_path', 'resources_zip'],
       'deps_dex': ['build_config', 'dex_path'],
-      'resource_rewriter': ['build_config']
+      'resource_rewriter': ['build_config'],
+      'group': ['build_config'],
   }
   required_options = required_options_map.get(options.type)
   if not required_options:
     raise Exception('Unknown type: <%s>' % options.type)
 
   if options.native_libs:
     required_options.append('readelf_path')
 
   build_utils.CheckOptions(options, parser, required_options)
 
@@ skipping 253 matching lines @@
   build_utils.WriteJson(config, options.build_config, only_if_changed=True)
 
   if options.depfile:
     build_utils.WriteDepfile(
         options.depfile,
         deps.AllConfigPaths() + build_utils.GetPythonDependencies())
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))