[Gin] Add a mechanism for wrapping C++ object

gin/gin.gyp

Index: gin/gin.gyp
diff --git a/gin/gin.gyp b/gin/gin.gyp
index e0ec34c53c7a0aa3d4a1f94a87dd74972f94eec7..4b08dfc8a0fc309adc70ed76e7a72509c6c6bbd8 100644
--- a/gin/gin.gyp
+++ b/gin/gin.gyp
@@ -19,14 +19,6 @@
         '../v8/tools/gyp/v8.gyp:v8',
       ],
       'sources': [
-        'modules/console.cc',
-        'modules/console.h',
-        'modules/file_module_provider.cc',
-        'modules/file_module_provider.h',
-        'modules/module_registry.cc',
-        'modules/module_registry.h',
-        'modules/module_runner_delegate.cc',
-        'modules/module_runner_delegate.h',
         'arguments.cc',
         'arguments.h',
         'array_buffer.cc',
@@ -39,17 +31,27 @@
         'dictionary.h',
         'gin.cc',
         'gin.h',
+        'modules/console.cc',
+        'modules/console.h',
+        'modules/file_module_provider.cc',
+        'modules/file_module_provider.h',
+        'modules/module_registry.cc',
+        'modules/module_registry.h',
+        'modules/module_runner_delegate.cc',
+        'modules/module_runner_delegate.h',
         'per_context_data.cc',
         'per_context_data.h',
         'per_isolate_data.cc',
         'per_isolate_data.h',
+        'public/gin_embedders.h',
+        'public/wrapper_info.h',
         'runner.cc',
         'runner.h',
         'try_catch.cc',
         'try_catch.h',
+        'wrappable.cc',
+        'wrappable.h',
         'wrapper_info.cc',
-        'public/gin_embedders.h',
-        'public/wrapper_info.h',
       ],
     },
     {
@@ -100,6 +102,7 @@
         'test/run_all_unittests.cc',
         'test/run_js_tests.cc',
         'runner_unittest.cc',
+        'wrappable_unittest.cc',
       ],
     },
   ],