Adding DateTimeFormat class to i18n API.

src/extensions/experimental/i18n-extension.cc

Index: src/extensions/experimental/i18n-extension.cc
===================================================================
--- src/extensions/experimental/i18n-extension.cc	(revision 7878)
+++ src/extensions/experimental/i18n-extension.cc	(working copy)
@@ -29,6 +29,7 @@
 
 #include "break-iterator.h"
 #include "collator.h"
+#include "datetime-format.h"
 #include "i18n-locale.h"
 #include "natives.h"
 
@@ -59,6 +60,8 @@
     return v8::FunctionTemplate::New(BreakIterator::JSBreakIterator);
   } else if (name->Equals(v8::String::New("NativeJSCollator"))) {
     return v8::FunctionTemplate::New(Collator::JSCollator);
+  } else if (name->Equals(v8::String::New("NativeJSDateTimeFormat"))) {
+    return v8::FunctionTemplate::New(DateTimeFormat::JSDateTimeFormat);
   }
 
   return v8::Handle<v8::FunctionTemplate>();