First cut at gin::Bind()

gin/arguments.h

Index: gin/arguments.h
diff --git a/gin/arguments.h b/gin/arguments.h
index 1d59d344563201208b787b34258f959e20e4bdbd..8a372eadfdb3113b2da925c996cbaa35f8d53989 100644
--- a/gin/arguments.h
+++ b/gin/arguments.h
@@ -16,11 +16,17 @@ class Arguments {
   ~Arguments();
 
   template<typename T>
+  // TODO(aa): Rename GetHolder().
   bool Holder(T* out) {
     return ConvertFromV8(info_.Holder(), out);
   }
 
   template<typename T>
+  bool GetData(T* out) {
+    return ConvertFromV8(info_.Data(), out);
+  }
+
+  template<typename T>
   bool GetNext(T* out) {
     if (next_ >= info_.Length()) {
       insufficient_arguments_ = true;