[Do Not Submit] Rough draft enabling junit tests for android studio

build/android/gyp/write_build_config.py

Index: build/android/gyp/write_build_config.py
diff --git a/build/android/gyp/write_build_config.py b/build/android/gyp/write_build_config.py
index 8f4580eaa6d113fd86683fbd2a8dcdda9aabacf8..211597c52325a307ce7172d3181b3999cffc75da 100755
--- a/build/android/gyp/write_build_config.py
+++ b/build/android/gyp/write_build_config.py
@@ -268,6 +268,8 @@ def main(argv):
   parser.add_option('--extra-classpath-jars',
       help='GYP-list of .jar files to include on the classpath when compiling, '
            'but not to include in the final binary.')
+  parser.add_option('--not-chromium-code', action='store_true',
+      help='Whether this library is chromium code or not.')
 
   # android library options
   parser.add_option('--dex-path', help='Path to target\'s dex output.')
@@ -325,7 +327,8 @@ def main(argv):
   build_utils.CheckOptions(options, parser, required_options)
 
   # Java prebuilts are the same as libraries except for in gradle files.
-  is_java_prebuilt = options.type == 'java_prebuilt'
+  is_java_prebuilt = (
+      options.type == 'java_prebuilt' or options.not_chromium_code)
   if is_java_prebuilt:
     options.type = 'java_library'