Revert trunk to version 3.16.4.

src/heap.h

Index: src/heap.h
diff --git a/src/heap.h b/src/heap.h
index 1615db5527dbcb8fc036c1a2f9a895051b303910..a2564a5a4f9b3b6f2565aa552837ff00ac504146 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -209,7 +209,6 @@ namespace internal {
   V(char_at_symbol, "CharAt")                                            \
   V(undefined_symbol, "undefined")                                       \
   V(value_of_symbol, "valueOf")                                          \
-  V(stack_symbol, "stack")                                               \
   V(InitializeVarGlobal_symbol, "InitializeVarGlobal")                   \
   V(InitializeConstGlobal_symbol, "InitializeConstGlobal")               \
   V(KeyedLoadElementMonomorphic_symbol,                                  \
@@ -428,41 +427,6 @@ class ExternalStringTable {
 };
 
 
-// The stack property of an error object is implemented as a getter that
-// formats the attached raw stack trace into a string.  This raw stack trace
-// keeps code and function objects alive until the getter is called the first
-// time.  To release those objects, we call the getter after each GC for
-// newly tenured error objects that are kept in a list.
-class ErrorObjectList {
- public:
-  inline void Add(JSObject* object);
-
-  inline void Iterate(ObjectVisitor* v);
-
-  void TearDown();
-
-  void RemoveUnmarked(Heap* heap);
-
-  void DeferredFormatStackTrace(Isolate* isolate);
-
-  void UpdateReferences();
-
-  void UpdateReferencesInNewSpace(Heap* heap);
-
- private:
-  static const int kBudgetPerGC = 16;
-
-  ErrorObjectList() : nested_(false) { }
-
-  friend class Heap;
-
-  List<Object*> list_;
-  bool nested_;
-
-  DISALLOW_COPY_AND_ASSIGN(ErrorObjectList);
-};
-
-
 enum ArrayStorageAllocationMode {
   DONT_INITIALIZE_ARRAY_ELEMENTS,
   INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE
@@ -1625,10 +1589,6 @@ class Heap {
     return &external_string_table_;
   }
 
-  ErrorObjectList* error_object_list() {
-    return &error_object_list_;
-  }
-
   // Returns the current sweep generation.
   int sweep_generation() {
     return sweep_generation_;
@@ -2205,8 +2165,6 @@ class Heap {
 
   ExternalStringTable external_string_table_;
 
-  ErrorObjectList error_object_list_;
-
   VisitorDispatchTable<ScavengingCallback> scavenging_visitors_table_;
 
   MemoryChunk* chunks_queued_for_free_;