gin test - add simple file access for JS

gin/test/file.h

Index: gin/test/file.h
diff --git a/gin/test/gc.h b/gin/test/file.h
similarity index 70%
copy from gin/test/gc.h
copy to gin/test/file.h
index 25917efd687f6c399fe3629a21775a7d8c4efc1a..a4acd59f0ba5674f44a973ed8663a5abf864e4da 100644
--- a/gin/test/gc.h
+++ b/gin/test/file.h
@@ -2,15 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef GIN_TEST_GC_H_
-#define GIN_TEST_GC_H_
+#ifndef GIN_TEST_FILE_H_
+#define GIN_TEST_FILE_H_
 
 #include "v8/include/v8.h"
 
 namespace gin {
 
-// This module provides bindings to the garbage collector.
-class GC {
+class File {
  public:
   static const char kModuleName[];
   static v8::Local<v8::Value> GetModule(v8::Isolate* isolate);
@@ -18,4 +17,5 @@ class GC {
 
 }  // namespace gin
 
-#endif  // GIN_TEST_GC_H_
+#endif  // GIN_TEST_FILE_H_
+