Include content_shell.pak with the webkit_unit_tests_apk as internal asset.

Source/web/web_tests.gyp

 #
 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #         * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #         * Redistributions in binary form must reproduce the above
@@ skipping 127 matching lines @@
                 'target_name': 'webkit_unit_tests_apk',
                 'type': 'none',
                 'dependencies': [
                     '<(DEPTH)/base/base.gyp:base_java',
                     '<(DEPTH)/net/net.gyp:net_java',
                     'webkit_unit_tests',
                 ],
                 'variables': {
                     'test_suite_name': 'webkit_unit_tests',
                     'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)webkit_unit_tests<(SHARED_LIB_SUFFIX)',
+                    'additional_input_paths': ['<(PRODUCT_DIR)/content_shell/assets/content_shell.pak'],
+                    'asset_location': '<(PRODUCT_DIR)/content_shell/assets',
                 },
                 'includes': [ '../../../../build/apk_test.gypi' ],
             }],
         }],
     ],
 }