Don't compile functions in a context the caller doesn't have access to

src/d8.h

Index: src/d8.h
diff --git a/src/d8.h b/src/d8.h
index 97820c9da242fea2eb45e4102af524f2967cbf14..d4230451ad92170b4e16a9d34505b1d2a1847fb8 100644
--- a/src/d8.h
+++ b/src/d8.h
@@ -290,7 +290,8 @@ class ShellOptions {
         isolate_sources(NULL),
         icu_data_file(NULL),
         natives_blob(NULL),
-        snapshot_blob(NULL) {}
+        snapshot_blob(NULL),
+        restricted_realms(false) {}
 
   ~ShellOptions() {
     delete[] isolate_sources;
@@ -318,6 +319,7 @@ class ShellOptions {
   const char* icu_data_file;
   const char* natives_blob;
   const char* snapshot_blob;
+  bool restricted_realms;
 };
 
 #ifdef V8_SHARED