Temporarily CHECK use after free in Value

base/json/json_writer.cc

Index: base/json/json_writer.cc
diff --git a/base/json/json_writer.cc b/base/json/json_writer.cc
index 07b9d5091c80f6ba3292bbfa711429c9ec44dc23..301b19174dcf020f0f779fa1c09b3ce3b2ea32dd 100644
--- a/base/json/json_writer.cc
+++ b/base/json/json_writer.cc
@@ -198,6 +198,11 @@ bool JSONWriter::BuildJSONString(const Value& node, size_t depth) {
       // Successful only if we're allowed to omit it.
       DLOG_IF(ERROR, !omit_binary_values_) << "Cannot serialize binary value.";
       return omit_binary_values_;
+
+    case Value::Type::DELETED:
+      // TODO(crbug.com/697817): This means |node| is used after free.
+      CHECK(false);
+      return false;
   }
   NOTREACHED();
   return false;