Don't leak contexts in Object.observe

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 156 matching lines @@
   V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \
   V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \
   V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \
   V(PROXY_ENUMERATE_INDEX, JSFunction, proxy_enumerate) \
   V(OBSERVERS_NOTIFY_CHANGE_INDEX, JSFunction, observers_notify_change) \
   V(OBSERVERS_ENQUEUE_SPLICE_INDEX, JSFunction, observers_enqueue_splice) \
   V(OBSERVERS_BEGIN_SPLICE_INDEX, JSFunction, \
     observers_begin_perform_splice) \
   V(OBSERVERS_END_SPLICE_INDEX, JSFunction, \
     observers_end_perform_splice) \
+  V(NATIVE_OBJECT_OBSERVE_INDEX, JSFunction, \
+    native_object_observe) \
+  V(NATIVE_OBJECT_GET_NOTIFIER_INDEX, JSFunction, \
+    native_object_get_notifier) \
+  V(NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE, JSFunction, \
+    native_object_notifier_perform_change) \
   V(SLOPPY_GENERATOR_FUNCTION_MAP_INDEX, Map, sloppy_generator_function_map) \
   V(STRICT_GENERATOR_FUNCTION_MAP_INDEX, Map, strict_generator_function_map) \
   V(GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX, Map, \
     generator_object_prototype_map) \
   V(ITERATOR_RESULT_MAP_INDEX, Map, iterator_result_map) \
   V(MAP_ITERATOR_MAP_INDEX, Map, map_iterator_map) \
   V(SET_ITERATOR_MAP_INDEX, Map, set_iterator_map)
 
 // JSFunctions are pairs (context, function code), sometimes also called
 // closures. A Context object is used to represent function contexts and
@@ skipping 148 matching lines @@
     PROMISE_CATCH_INDEX,
     TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX,
     DERIVED_HAS_TRAP_INDEX,
     DERIVED_GET_TRAP_INDEX,
     DERIVED_SET_TRAP_INDEX,
     PROXY_ENUMERATE_INDEX,
     OBSERVERS_NOTIFY_CHANGE_INDEX,
     OBSERVERS_ENQUEUE_SPLICE_INDEX,
     OBSERVERS_BEGIN_SPLICE_INDEX,
     OBSERVERS_END_SPLICE_INDEX,
+    NATIVE_OBJECT_OBSERVE_INDEX,
+    NATIVE_OBJECT_GET_NOTIFIER_INDEX,
+    NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE,
     SLOPPY_GENERATOR_FUNCTION_MAP_INDEX,
     STRICT_GENERATOR_FUNCTION_MAP_INDEX,
     GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX,
     ITERATOR_RESULT_MAP_INDEX,
     MAP_ITERATOR_MAP_INDEX,
     SET_ITERATOR_MAP_INDEX,
 
     // Properties from here are treated as weak references by the full GC.
     // Scavenge treats them as strong references.
     OPTIMIZED_FUNCTIONS_LIST,  // Weak.
@@ skipping 175 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_