Revert of Refactor SharedFunctionInfo::IsBuiltin.

src/accessors.cc

 // 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.
 
 #include "src/accessors.h"
 
 #include "src/api.h"
 #include "src/contexts.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
@@ skipping 1007 matching lines @@
     // No frame corresponding to the given function found. Return null.
     return MaybeHandle<JSFunction>();
   }
   // Find previously called non-toplevel function.
   JSFunction* caller;
   do {
     caller = it.next();
     if (caller == NULL) return MaybeHandle<JSFunction>();
   } while (caller->shared()->is_toplevel());
 
-  // If caller is not user code and caller's caller is also not user code,
+  // If caller is a built-in function and caller's caller is also built-in,
   // use that instead.
   JSFunction* potential_caller = caller;
-  while (potential_caller != NULL &&
-         !potential_caller->shared()->IsUserJavaScript()) {
+  while (potential_caller != NULL && potential_caller->shared()->IsBuiltin()) {
     caller = potential_caller;
     potential_caller = it.next();
   }
   if (!caller->shared()->native() && potential_caller != NULL) {
     caller = potential_caller;
   }
   // Censor if the caller is not a sloppy mode function.
   // Change from ES5, which used to throw, see:
   // https://bugs.ecmascript.org/show_bug.cgi?id=310
   if (is_strict(caller->shared()->language_mode())) {
@@ skipping 209 matching lines @@
 Handle<AccessorInfo> Accessors::ErrorStackInfo(Isolate* isolate,
                                                PropertyAttributes attributes) {
   Handle<AccessorInfo> info =
       MakeAccessor(isolate, isolate->factory()->stack_string(),
                    &ErrorStackGetter, &ErrorStackSetter, attributes);
   return info;
 }
 
 }  // namespace internal
 }  // namespace v8