[es2015] Remove the @@hasInstance protector cell.

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index 38f2602f9adb2d44cb60f3ea83a30ce79cbb1a07..46ddc79bededbda09aec2573bfec6ca45a8899a1 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -33,6 +33,7 @@ enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol };
   V(FixedCOWArrayMap, FixedCOWArrayMap)               \
   V(FixedDoubleArrayMap, FixedDoubleArrayMap)         \
   V(FunctionTemplateInfoMap, FunctionTemplateInfoMap) \
+  V(has_instance_symbol, HasInstanceSymbol)           \
   V(HeapNumberMap, HeapNumberMap)                     \
   V(MinusZeroValue, MinusZero)                        \
   V(NanValue, Nan)                                    \
@@ -695,6 +696,7 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
   Node* IsJSReceiver(Node* object);
   Node* IsMap(Node* object);
   Node* IsCallableMap(Node* map);
+  Node* IsCallable(Node* object);
   Node* IsBoolean(Node* object);
   Node* IsName(Node* object);
   Node* IsSymbol(Node* object);