[scopes] With --print-scopes, print is_hidden() status too.

src/ast/scopes.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/ast/scopes.h"
 
 #include <set>
 
 #include "src/accessors.h"
 #include "src/ast/ast.h"
@@ skipping 1551 matching lines @@
   }
 
   // Print parameters, if any.
   Variable* function = nullptr;
   if (is_function_scope()) {
     AsDeclarationScope()->PrintParameters();
     function = AsDeclarationScope()->function_var();
   }
 
   PrintF(" { // (%d, %d)\n", start_position(), end_position());
+  if (is_hidden()) {
+    Indent(n1, "// is hidden\n");
+  }
 
   // Function name, if any (named function literals, only).
   if (function != nullptr) {
     Indent(n1, "// (local) function name: ");
     PrintName(function->raw_name());
     PrintF("\n");
   }
 
   // Scope info.
   if (is_strict(language_mode())) {
@@ skipping 640 matching lines @@
   Variable* function =
       is_function_scope() ? AsDeclarationScope()->function_var() : nullptr;
   bool is_function_var_in_context =
       function != nullptr && function->IsContextSlot();
   return num_heap_slots() - Context::MIN_CONTEXT_SLOTS -
          (is_function_var_in_context ? 1 : 0);
 }
 
 }  // namespace internal
 }  // namespace v8