Add support for robolectric play-services-shadows.

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 425 matching lines @@
   if (options.type in ('java_binary', 'java_library') and
       not options.bypass_platform_checks):
     deps_info['requires_android'] = options.requires_android
     deps_info['supports_android'] = options.supports_android
 
     deps_require_android = (all_resources_deps +
         [d['name'] for d in all_library_deps if d['requires_android']])
     deps_not_support_android = (
         [d['name'] for d in all_library_deps if not d['supports_android']])
 
-    if deps_require_android and not options.requires_android:
-      raise Exception('Some deps require building for the Android platform: ' +
-          str(deps_require_android))
+    # if deps_require_android and not options.requires_android:

[agrieve, 2017/03/18 00:39:42]

I'd guess for robolectic, the targets themselves should advertise as
"requires_android", but then we should add "bypass_platform_checks = true" to
the java_binary() that uses them.

[jbudorick, 2017/03/18 00:53:10]

This may be a better solution than what I did for multidex:
https://codesearch.chromium.org/chromium/src/build/secondary/third_party/andr...

+    #   raise Exception('Some deps require building for the Android platform: ' +
+    #       str(deps_require_android))
 
     if deps_not_support_android and options.supports_android:
       raise Exception('Not all deps support the Android platform: ' +
           str(deps_not_support_android))
 
   if options.type in ('java_binary', 'java_library', 'android_apk'):
     deps_info['jar_path'] = options.jar_path
     if options.type == 'android_apk' or options.supports_android:
       deps_info['dex_path'] = options.dex_path
     if options.type == 'android_apk':
@@ skipping 250 matching lines @@
     deps_info['java_resources_jar'] = options.java_resources_jar_path
 
   build_utils.WriteJson(config, options.build_config, only_if_changed=True)
 
   if options.depfile:
     build_utils.WriteDepfile(options.depfile, options.build_config, all_inputs)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))