Add wtf_unittests target that links unit tests outside DLL

Source/core/core.gyp/core.gyp

 #
 # Copyright (C) 2009 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 1028 matching lines @@
         }],
       ],
     },
     {
       'target_name': 'webcore_test_support',
       'type': 'static_library',
       'dependencies': [
         '../../config.gyp:config',
         'webcore',
       ],
+      'defines': [
+        'WEBKIT_IMPLEMENTATION=1',
+      ],
       'include_dirs': [
         '<(bindings_dir)/v8',  # FIXME: Remove once http://crbug.com/236119 is fixed.
         '../testing',
         '../testing/v8',
       ],
       'sources': [
         '<@(webcore_test_support_files)',
         '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8MallocStatistics.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8MallocStatistics.h',
         '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8TypeConversions.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8TypeConversions.h',
         '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8Internals.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8Internals.h',
         '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8InternalSettings.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8InternalSettings.h',
         '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8InternalSettingsGenerated.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8InternalSettingsGenerated.h',
         '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8InternalRuntimeFlags.cpp',
         '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8InternalRuntimeFlags.h',
       ],
       'sources/': [
         ['exclude', 'testing/js'],
       ],
     },
   ],  # targets
 }