[Android] Add chrome_java target for building Java code in the chromium layer.

testing/android/generate_native_test.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2012 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.
 
 # On Android we build unit test bundles as shared libraries.  To run
 # tests, we launch a special "test runner" apk which loads the library
 # then jumps into it.  Since java is required for many tests
 # (e.g. PathUtils.java), a "pure native" test bundle is inadequate.
@@ skipping 127 matching lines @@
     self._CopyLibraryAndJars()
 
   def Compile(self, ant_args):
     """Build the generated apk with ant.
 
     Args:
       ant_args: extra args to pass to ant
     """
     cmd = ['ant']
     if ant_args:
-      cmd.append(ant_args)
+      cmd.extend(ant_args)
     cmd.append("-DAPP_ABI=" + self._target_abi)
     cmd.extend(['-buildfile',
                 os.path.join(self._output_directory, 'native_test_apk.xml')])
     logging.warn(cmd)
     p = subprocess.Popen(cmd, stderr=subprocess.STDOUT)
     (stdout, _) = p.communicate()
     logging.warn(stdout)
     if p.returncode != 0:
       logging.error('Ant return code %d', p.returncode)
       sys.exit(p.returncode)
@@ skipping 23 matching lines @@
                     help='ABI for native shared library')
   parser.add_option('--sdk-build', type='int', default=1,
                     help='Unless set to 0, build the generated apk with ant. '
                          'Otherwise assume compiling within the Android '
                          'source tree using Android.mk.')
   # FIXME(beverloo): Remove --ant-compile when all users adopted.
   parser.add_option('--ant-compile', action='store_true',
                     help=('If specified, build the generated apk with ant. '
                           'Otherwise assume compiling within the Android '
                           'source tree using Android.mk.'))
-  parser.add_option('--ant-args',
+  parser.add_option('--ant-args', action='append',
                     help='extra args for ant')
 
   options, _ = parser.parse_args(argv)
 
   # It is not an error to specify no native library; the apk should
   # still be generated and build.  It will, however, print
   # NATIVE_LOADER_FAILED when run.
   if not options.output:
     raise Exception('No output directory specified for generated files')
 
@@ skipping 13 matching lines @@
 
   if options.sdk_build or options.ant_compile:
     ntag.Compile(options.ant_args)
   else:
     ntag.CompileAndroidMk()
 
   logging.warn('COMPLETE.')
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))