Add gin, a lightweight bindings system for V8

gin/test/run_all_unittests.cc

Index: gin/test/run_all_unittests.cc
diff --git a/mojo/common/test/run_all_unittests.cc b/gin/test/run_all_unittests.cc
similarity index 89%
copy from mojo/common/test/run_all_unittests.cc
copy to gin/test/run_all_unittests.cc
index dc1990a918bbe3207951e9caa1a08417183f4f2b..49d7d7d66192d2eca66d479be99b53b971e3233e 100644
--- a/mojo/common/test/run_all_unittests.cc
+++ b/gin/test/run_all_unittests.cc
@@ -7,12 +7,12 @@
 #include "base/compiler_specific.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
-#include "mojo/system/core_impl.h"
+#include "gin/initialize.h"
 
 int main(int argc, char** argv) {
   base::TestSuite test_suite(argc, argv);
 
-  mojo::system::CoreImpl::Init();
+  gin::Initialize();
 
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&base::TestSuite::Run,