Revert of [handles] Sanitize Handle and friends.

src/api.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/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 3779 matching lines @@
     return v8::String::NewFromUtf8(v8_isolate, "[object Object]",
                                    NewStringType::kNormal);
   }
   if (internal::FLAG_harmony_tostring) {
     PREPARE_FOR_EXECUTION(context, "v8::Object::ObjectProtoToString()", String);
     auto toStringTag = isolate->factory()->to_string_tag_symbol();
     has_pending_exception = !i::Runtime::GetObjectProperty(
                                  isolate, self, toStringTag).ToHandle(&tag);
     RETURN_ON_FAILED_EXECUTION(String);
     if (tag->IsString()) {
-      class_name = Utils::OpenHandle(*handle_scope.Escape(
-          Utils::ToLocal(i::Handle<i::String>::cast(tag))));
+      class_name = i::Handle<i::String>::cast(tag).EscapeFrom(&handle_scope);
     }
   }
   const char* prefix = "[object ";
   Local<String> str = Utils::ToLocal(class_name);
   const char* postfix = "]";
 
   int prefix_len = i::StrLength(prefix);
   int str_len = str->Utf8Length();
   int postfix_len = i::StrLength(postfix);
 
@@ skipping 4600 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8