Remove few more errors in mac scons build.

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()
 
 env.SConscript([
@@ skipping 79 matching lines @@
           '/nxcompat',
       ],
   )
 elif env['PLATFORM'] in ('posix', 'darwin'):
   env.Append(
       LIBS = [
           'event',
       ]
   )
 
+if env['PLATFORM'] == 'darwin':
+  env.Append(
+      CPPPATH = [
+          '$THIRD_PARTY_DIR/WebKit/WebKit/mac/WebCoreSupport',
+      ],
+  )
+
 input_files = [
     'event_sending_controller.cc',
     'layout_test_controller.cc',
     'simple_resource_loader_bridge.cc',
     'test_navigation_controller.cc',
     'test_shell_request_context.cc',
     'test_shell_switches.cc',
     'test_shell.cc',
     'test_webview_delegate.cc',
     'text_input_controller.cc',
@@ skipping 79 matching lines @@
       # Commented out until a regression is fixed and this file is restored.
       #'$WEBKIT_DIR/glue/stringimpl_unittest.cc',
       '$WEBKIT_DIR/glue/webplugin_impl_unittest.cc',
       '$WEBKIT_DIR/port/platform/graphics/chromium/UniscribeHelper_unittest.cpp',
   ])
 
 test_shell_tests = env.ChromeTestProgram('test_shell_tests',
                                          resources + test_files)
 i = env.Install('$TARGET_ROOT', test_shell_tests)
 env.Alias('webkit', i)