1 files changed, 5 insertions, 0 deletions
diff --git a/gin/context_holder.h b/gin/context_holder.h
index c9068d1..d43e193 100644
--- a/gin/context_holder.h
+++ b/gin/context_holder.h
@@ -6,11 +6,15 @@
 #define GIN_CONTEXT_HOLDER_H_
 
 #include <list>
+
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "v8/include/v8.h"
 
 namespace gin {
 
+class PerContextData;
+
 class ContextHolder {
  public:
   explicit ContextHolder(v8::Isolate* isolate);
@@ -27,6 +31,7 @@ class ContextHolder {
  private:
   v8::Isolate* isolate_;
   v8::Persistent<v8::Context> context_;
+  scoped_ptr<PerContextData> data_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextHolder);
 };