Crankshaft is now able to compile top level code even if there is a ScriptContext.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 06bd125127a11fdb6dcde79bb14f48cf5aacd356..0cd277987780699391008ed5947a2526a915a464 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -3161,7 +3161,9 @@ Genesis::Genesis(Isolate* isolate,
 
   // Check that the script context table is empty except for the 'this' binding.
   // We do not need script contexts for native scripts.
-  DCHECK_EQ(1, native_context()->script_context_table()->used());
+  if (!FLAG_global_var_shortcuts) {
+    DCHECK_EQ(1, native_context()->script_context_table()->used());
+  }
 
   result_ = native_context();
 }