filter out .caller from other worlds

src/contexts.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CONTEXTS_H_
 #define V8_CONTEXTS_H_
 
 #include "heap.h"
 #include "objects.h"
 
@@ skipping 431 matching lines @@
   }
   bool IsModuleContext() {
     Map* map = this->map();
     return map == map->GetHeap()->module_context_map();
   }
   bool IsGlobalContext() {
     Map* map = this->map();
     return map == map->GetHeap()->global_context_map();
   }
 
+  bool HasSameSecurityTokenAs(Context* that) {
+    return this->global_object()->native_context()->security_token() ==
+        that->global_object()->native_context()->security_token();
+  }
+
   // A native context holds a list of all functions with optimized code.
   void AddOptimizedFunction(JSFunction* function);
   void RemoveOptimizedFunction(JSFunction* function);
   void SetOptimizedFunctionsListHead(Object* head);
   Object* OptimizedFunctionsListHead();
 
   // The native context also stores a list of all optimized code and a
   // list of all deoptimized code, which are needed by the deoptimizer.
   void AddOptimizedCode(Code* code);
   void SetOptimizedCodeListHead(Object* head);
@@ skipping 78 matching lines @@
   static bool IsBootstrappingOrGlobalObject(Isolate* isolate, Object* object);
 #endif
 
   STATIC_CHECK(kHeaderSize == Internals::kContextHeaderSize);
   STATIC_CHECK(EMBEDDER_DATA_INDEX == Internals::kContextEmbedderDataIndex);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CONTEXTS_H_