Do not guess UTF8 encoding

chrome/browser/browser_encoding_browsertest.cc

 // Copyright (c) 2012 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 <stddef.h>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
@@ skipping 209 matching lines @@
         "ISO-8859-7" },
       { "ISO-8859-8-I_with_no_encoding_specified.html",
         "expected_ISO-8859-8-I_saved_from_no_encoding_specified.html",
         "windows-1255" },
       { "KOI8-R_with_no_encoding_specified.html",
         "expected_KOI8-R_saved_from_no_encoding_specified.html",
         "KOI8-R" },
       { "Shift-JIS_with_no_encoding_specified.html",
         "expected_Shift-JIS_saved_from_no_encoding_specified.html",
         "Shift_JIS" },
-      { "UTF-8_with_no_encoding_specified.html",
-        "expected_UTF-8_saved_from_no_encoding_specified.html",
-        "UTF-8" },
       { "EUC-KR_with_no_encoding_specified.html",
         "expected_EUC-KR_saved_from_no_encoding_specified.html",
         "EUC-KR" },
       { "windows-1251_with_no_encoding_specified.html",
         "expected_windows-1251_saved_from_no_encoding_specified.html",
         "windows-1251" },
       { "windows-1254_with_no_encoding_specified.html",
         "expected_windows-1254_saved_from_no_encoding_specified.html",
         "windows-1254" },
       { "windows-1255_with_no_encoding_specified.html",
@@ skipping 30 matching lines @@
 
     // Dump the page, the content of dump page should be equal with our expect
     // result file.
     base::FilePath expected_result_file_name =
         base::FilePath().AppendASCII(kAutoDetectDir).
         AppendASCII(kExpectedResultDir).
         AppendASCII(kTestDatas[i].expected_result);
     SaveAndCompare(kTestDatas[i].test_file_name, expected_result_file_name);
   }
 }