Add RemovePrototype to FunctionTemplate

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index f800c5d580eace363c14b94ac947af8cec798fc7..35ff69c6dbfe309a9fc7a427e6b5a996c17b0d9f 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -9841,6 +9841,7 @@ class FunctionTemplateInfo: public TemplateInfo {
   // requires access check.
   DECL_BOOLEAN_ACCESSORS(needs_access_check)
   DECL_BOOLEAN_ACCESSORS(read_only_prototype)
+  DECL_BOOLEAN_ACCESSORS(remove_prototype)
 
   static inline FunctionTemplateInfo* cast(Object* obj);
 
@@ -9876,6 +9877,7 @@ class FunctionTemplateInfo: public TemplateInfo {
   static const int kUndetectableBit      = 1;
   static const int kNeedsAccessCheckBit  = 2;
   static const int kReadOnlyPrototypeBit = 3;
+  static const int kRemovePrototypeBit   = 4;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(FunctionTemplateInfo);
 };