[stubs] A new approach to TF stubs

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index f9435439666b9b641eff7e31aedcba416cac579d..241f37c3e79a3d48902d587e13f97340f9a8e8e1 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -166,7 +166,6 @@ namespace internal {
   V(FixedArray, extra_natives_source_cache, ExtraNativesSourceCache)           \
   V(FixedArray, experimental_extra_natives_source_cache,                       \
     ExperimentalExtraNativesSourceCache)                                       \
-  V(FixedArray, code_stub_natives_source_cache, CodeStubNativesSourceCache)    \
   V(Script, empty_script, EmptyScript)                                         \
   V(NameDictionary, intrinsic_function_names, IntrinsicFunctionNames)          \
   V(Cell, undefined_cell, UndefinedCell)                                       \
@@ -186,8 +185,6 @@ namespace internal {
   V(PropertyCell, array_protector, ArrayProtector)                             \
   V(PropertyCell, empty_property_cell, EmptyPropertyCell)                      \
   V(Object, weak_stack_trace_list, WeakStackTraceList)                         \
-  V(Object, code_stub_context, CodeStubContext)                                \
-  V(JSObject, code_stub_exports_object, CodeStubExportsObject)                 \
   V(Object, noscript_shared_function_infos, NoScriptSharedFunctionInfos)       \
   V(FixedArray, interpreter_table, InterpreterTable)                           \
   V(Map, bytecode_array_map, BytecodeArrayMap)                                 \
@@ -1153,14 +1150,6 @@ class Heap {
     roots_[kMaterializedObjectsRootIndex] = objects;
   }
 
-  void SetRootCodeStubContext(Object* value) {
-    roots_[kCodeStubContextRootIndex] = value;
-  }
-
-  void SetRootCodeStubExportsObject(JSObject* value) {
-    roots_[kCodeStubExportsObjectRootIndex] = value;
-  }
-
   void SetRootScriptList(Object* value) {
     roots_[kScriptListRootIndex] = value;
   }