Call JS functions via native context instead of js builtins object.

src/contexts.h

Index: src/contexts.h
diff --git a/src/contexts.h b/src/contexts.h
index 6b510ab2a2ceedb9077d19498755c796d79be959..0a23c4144d6082cbeb2ce8c0fe9ba3ea47b727d3 100644
--- a/src/contexts.h
+++ b/src/contexts.h
@@ -75,13 +75,20 @@ enum BindingFlags {
 
 #define NATIVE_CONTEXT_IMPORTED_FIELDS(V)                                     \
   V(ARRAY_VALUES_ITERATOR_INDEX, JSFunction, array_values_iterator)           \
+  V(CONCAT_ITERABLE_TO_ARRAY_INDEX, JSFunction, concat_iterable_to_array)     \
   V(CREATE_DATE_FUN_INDEX, JSFunction, create_date_fun)                       \
+  V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap)                     \
+  V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap)                     \
+  V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap)                     \
   V(ERROR_FUNCTION_INDEX, JSFunction, error_function)                         \
   V(EVAL_ERROR_FUNCTION_INDEX, JSFunction, eval_error_function)               \
   V(GET_STACK_TRACE_LINE_INDEX, JSFunction, get_stack_trace_line_fun)         \
+  V(GET_TEMPLATE_CALL_SITE_INDEX, JSFunction, get_template_call_site)         \
   V(GLOBAL_EVAL_FUN_INDEX, JSFunction, global_eval_fun)                       \
   V(JSON_SERIALIZE_ADAPTER_INDEX, JSFunction, json_serialize_adapter)         \
   V(MAKE_ERROR_FUNCTION_INDEX, JSFunction, make_error_function)               \
+  V(MAKE_RANGE_ERROR_INDEX, JSFunction, make_range_error)                     \
+  V(MAKE_TYPE_ERROR_INDEX, JSFunction, make_type_error)                       \
   V(MAP_DELETE_METHOD_INDEX, JSFunction, map_delete)                          \
   V(MAP_FROM_ARRAY_INDEX, JSFunction, map_from_array)                         \
   V(MAP_GET_METHOD_INDEX, JSFunction, map_get)                                \
@@ -96,6 +103,8 @@ enum BindingFlags {
   V(NATIVE_OBJECT_OBSERVE_INDEX, JSFunction, native_object_observe)           \
   V(NO_SIDE_EFFECT_TO_STRING_FUN_INDEX, JSFunction,                           \
     no_side_effect_to_string_fun)                                             \
+  V(NON_NUMBER_TO_NUMBER_INDEX, JSFunction, non_number_to_number)             \
+  V(NON_STRING_TO_STRING_INDEX, JSFunction, non_string_to_string)             \
   V(OBJECT_DEFINE_OWN_PROPERTY_INDEX, JSFunction, object_define_own_property) \
   V(OBJECT_GET_OWN_PROPERTY_DESCROPTOR_INDEX, JSFunction,                     \
     object_get_own_property_descriptor)                                       \
@@ -111,12 +120,17 @@ enum BindingFlags {
   V(PROMISE_REJECT_INDEX, JSFunction, promise_reject)                         \
   V(PROMISE_RESOLVE_INDEX, JSFunction, promise_resolve)                       \
   V(PROMISE_THEN_INDEX, JSFunction, promise_then)                             \
+  V(PROXY_ENUMERATE_INDEX, JSFunction, proxy_enumerate)                       \
   V(RANGE_ERROR_FUNCTION_INDEX, JSFunction, range_error_function)             \
   V(REFERENCE_ERROR_FUNCTION_INDEX, JSFunction, reference_error_function)     \
+  V(REFLECT_APPLY_INDEX, JSFunction, reflect_apply)                           \
+  V(REFLECT_CONSTRUCT_INDEX, JSFunction, reflect_construct)                   \
   V(SET_ADD_METHOD_INDEX, JSFunction, set_add)                                \
   V(SET_DELETE_METHOD_INDEX, JSFunction, set_delete)                          \
   V(SET_FROM_ARRAY_INDEX, JSFunction, set_from_array)                         \
   V(SET_HAS_METHOD_INDEX, JSFunction, set_has)                                \
+  V(SPREAD_ARGUMENTS_INDEX, JSFunction, spread_arguments)                     \
+  V(SPREAD_ITERABLE_INDEX, JSFunction, spread_iterable)                       \
   V(STACK_OVERFLOW_BOILERPLATE_INDEX, JSObject, stack_overflow_boilerplate)   \
   V(SYNTAX_ERROR_FUNCTION_INDEX, JSFunction, syntax_error_function)           \
   V(TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, JSFunction,                        \
@@ -124,16 +138,13 @@ enum BindingFlags {
   V(TO_DETAIL_STRING_FUN_INDEX, JSFunction, to_detail_string_fun)             \
   V(TO_INTEGER_FUN_INDEX, JSFunction, to_integer_fun)                         \
   V(TO_LENGTH_FUN_INDEX, JSFunction, to_length_fun)                           \
+  V(TO_NAME_INDEX, JSFunction, to_name)                                       \
   V(TO_NUMBER_FUN_INDEX, JSFunction, to_number_fun)                           \
+  V(TO_PRIMITIVE_INDEX, JSFunction, to_primitive)                             \
   V(TO_STRING_FUN_INDEX, JSFunction, to_string_fun)                           \
   V(TYPE_ERROR_FUNCTION_INDEX, JSFunction, type_error_function)               \
   V(URI_ERROR_FUNCTION_INDEX, JSFunction, uri_error_function)
 
-#define NATIVE_CONTEXT_IMPORTED_FIELDS_FOR_PROXY(V)       \
-  V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \
-  V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \
-  V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \
-  V(PROXY_ENUMERATE_INDEX, JSFunction, proxy_enumerate)
 
 #define NATIVE_CONTEXT_FIELDS(V)                                               \
   V(GLOBAL_PROXY_INDEX, JSObject, global_proxy_object)                         \
@@ -219,8 +230,7 @@ enum BindingFlags {
   V(UINT32_ARRAY_FUN_INDEX, JSFunction, uint32_array_fun)                      \
   V(UINT8_ARRAY_FUN_INDEX, JSFunction, uint8_array_fun)                        \
   V(UINT8_CLAMPED_ARRAY_FUN_INDEX, JSFunction, uint8_clamped_array_fun)        \
-  NATIVE_CONTEXT_IMPORTED_FIELDS(V)                                            \
-  NATIVE_CONTEXT_IMPORTED_FIELDS_FOR_PROXY(V)
+  NATIVE_CONTEXT_IMPORTED_FIELDS(V)
 
 // A table of all script contexts. Every loaded top-level script with top-level
 // lexical declarations contributes its ScriptContext into this table.
@@ -336,7 +346,7 @@ class Context: public FixedArray {
   }
 
   // The default context slot layout; indices are FixedArray slot indices.
-  enum {
+  enum Index {
     // These slots are in all contexts.
     CLOSURE_INDEX,
     PREVIOUS_INDEX,