Enable CED HTML5 mode

base/i18n/encoding_detection.cc

 // Copyright 2016 The Chromium 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 "base/i18n/encoding_detection.h"
 
 #include "third_party/ced/src/compact_enc_det/compact_enc_det.h"
 
 namespace base {
 
 bool DetectEncoding(const std::string& text, std::string* encoding) {
   int consumed_bytes;
   bool is_reliable;
   Encoding enc = CompactEncDet::DetectEncoding(
       text.c_str(), text.length(), nullptr, nullptr, nullptr,
       UNKNOWN_ENCODING,
       UNKNOWN_LANGUAGE,
       CompactEncDet::QUERY_CORPUS,  // plain text
       false,  // Include 7-bit encodings
       &consumed_bytes,
       &is_reliable);
 
   if (enc == UNKNOWN_ENCODING)
     return false;
 
-  // 7-bit encodings (except ISO-2022-JP) are not supported in web standard.
-  // Mark them as ascii to keep the raw bytes intact.
-  switch (enc) {
-    case HZ_GB_2312:
-    case ISO_2022_KR:
-    case ISO_2022_CN:
-    case UTF7:
-      enc = ASCII_7BIT;
-      break;
-    default:
-      break;
-  }
   *encoding = MimeEncodingName(enc);
   return true;
 }
 }  // namespace base