Always deserialize scope infos for parsing

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index eb1841d4d834532fa224ee82a07a56a7aac310a6..35ec2a7d987eb57eb2a59c4f5143d092ed652e7b 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -874,10 +874,6 @@ class Isolate {
     return keyed_lookup_cache_;
   }
 
-  ContextSlotCache* context_slot_cache() {
-    return context_slot_cache_;
-  }
-
   DescriptorLookupCache* descriptor_lookup_cache() {
     return descriptor_lookup_cache_;
   }
@@ -1319,7 +1315,6 @@ class Isolate {
   int stack_trace_for_uncaught_exceptions_frame_limit_;
   StackTrace::StackTraceOptions stack_trace_for_uncaught_exceptions_options_;
   KeyedLookupCache* keyed_lookup_cache_;
-  ContextSlotCache* context_slot_cache_;
   DescriptorLookupCache* descriptor_lookup_cache_;
   HandleScopeData handle_scope_data_;
   HandleScopeImplementer* handle_scope_implementer_;