Add C++ implementation of Object.defineProperties

tools/gyp/v8.gyp

 # Copyright 2012 the V8 project authors. 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
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 877 matching lines @@
         '../../src/profiler/heap-snapshot-generator.h',
         '../../src/profiler/profile-generator-inl.h',
         '../../src/profiler/profile-generator.cc',
         '../../src/profiler/profile-generator.h',
         '../../src/profiler/sampler.cc',
         '../../src/profiler/sampler.h',
         '../../src/profiler/strings-storage.cc',
         '../../src/profiler/strings-storage.h',
         '../../src/profiler/unbound-queue-inl.h',
         '../../src/profiler/unbound-queue.h',
+        '../../src/property-descriptor.cc',
+        '../../src/property-descriptor.h',
         '../../src/property-details.h',
         '../../src/property.cc',
         '../../src/property.h',
         '../../src/prototype.h',
         '../../src/regexp/bytecodes-irregexp.h',
         '../../src/regexp/interpreter-irregexp.cc',
         '../../src/regexp/interpreter-irregexp.h',
         '../../src/regexp/jsregexp-inl.h',
         '../../src/regexp/jsregexp.cc',
         '../../src/regexp/jsregexp.h',
@@ skipping 1181 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }