Don't include tested apks resources in test apk

build/android/gyp/javac.py

 #!/usr/bin/env python
 #
 # Copyright 2013 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.
 
 import fnmatch
 import optparse
 import os
 import shutil
@@ skipping 218 matching lines @@
     if options.javac_includes:
       javac_includes = build_utils.ParseGypList(options.javac_includes)
       filtered_java_files = []
       for f in java_files:
         for include in javac_includes:
           if fnmatch.fnmatch(f, include):
             filtered_java_files.append(f)
             break
       java_files = filtered_java_files
 
-    DoJavac(
-        classpath,
-        classes_dir,
-        options.chromium_code,
-        java_files)
+    if len(java_files) != 0:
+      DoJavac(
+          classpath,
+          classes_dir,
+          options.chromium_code,
+          java_files)
 
     if options.jar_path:
       if options.main_class or options.manifest_entry:
         if options.manifest_entry:
           entries = map(lambda e: e.split(":"), options.manifest_entry)
         else:
           entries = []
         manifest_file = os.path.join(temp_dir, 'manifest')
         CreateManifest(manifest_file, classpath, options.main_class, entries)
       else:
@@ skipping 18 matching lines @@
         input_files + build_utils.GetPythonDependencies())
 
   if options.stamp:
     build_utils.Touch(options.stamp)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))