Allow chromium to be built with some system libs by introducing...

webkit/tools/test_shell/SConscript

 # Copyright (c) 2006-2008 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('env', 'env_res')
 
 env = env.Clone()
 env_res = env_res.Clone()
 
 if env['PLATFORM'] == 'win32':
@@ skipping 19 matching lines @@
         'glue',
         'port',
         'base',
         'base_gfx',
         'breakpad_handler',
         'googleurl',
         'net',
         'sdch',
         'skia',
         'gtest',
-        'bzip2',
+        env['BZIP2_LIB'],
         'V8Bindings',
         'WebCore',
         'WTF',
         env['ICU_LIBS'],  # TODO(sgk):  '$ICU_LIBS' when scons is fixed
         'libjpeg',
         'libpng',
-        'libxml',
+        env['XML_LIB'],
         'libxslt',
         'modp_b64',
         'zlib',
         'sqlite',
         'v8',
         'JavaScriptCore_pcre',
         'default_plugin',
     ],
 )
 
@@ skipping 132 matching lines @@
       # Commented out until a regression is fixed and this file is restored.
       #'$WEBKIT_DIR/glue/stringimpl_unittest.cc',
       '$WEBKIT_DIR/glue/webplugin_impl_unittest.cc',
   ])
 
 test_shell_tests = env.ChromeTestProgram('test_shell_tests',
                                          resources + test_files)
 i = env.Install('$TARGET_ROOT', test_shell_tests)
 env.Alias('webkit', i)