Stop doing unnecessary UTF-8 to UTF-16 conversions in JSONWriter.

net/base/net_util_unittest.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 "net/base/net_util.h"
 
 #include <string.h>
 
 #include <algorithm>
 
@@ skipping 2242 matching lines @@
      base::Time(),
      "<script>addRow(\"quo\\\"tes\",\"quo%22tes\",0,\"9.8 kB\",\"\");</script>"
          "\n"},
     // U+D55C0 U+AE00. raw_bytes is empty (either a local file with
     // UTF-8/UTF-16 encoding or a remote file on an ftp server using UTF-8
     {L"\xD55C\xAE00.txt",
      "",
      false,
      10000,
      base::Time(),
-     "<script>addRow(\"\\uD55C\\uAE00.txt\",\"%ED%95%9C%EA%B8%80.txt\""
-         ",0,\"9.8 kB\",\"\");</script>\n"},
+     "<script>addRow(\"\xED\x95\x9C\xEA\xB8\x80.txt\","
+         "\"%ED%95%9C%EA%B8%80.txt\",0,\"9.8 kB\",\"\");</script>\n"},
     // U+D55C0 U+AE00. raw_bytes is the corresponding EUC-KR sequence:
     // a local or remote file in EUC-KR.
     {L"\xD55C\xAE00.txt",
      "\xC7\xD1\xB1\xDB.txt",
      false,
      10000,
      base::Time(),
-     "<script>addRow(\"\\uD55C\\uAE00.txt\",\"%C7%D1%B1%DB.txt\""
+     "<script>addRow(\"\xED\x95\x9C\xEA\xB8\x80.txt\",\"%C7%D1%B1%DB.txt\""
          ",0,\"9.8 kB\",\"\");</script>\n"},
   };
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
     const std::string results = GetDirectoryListingEntry(
         WideToUTF16(test_cases[i].name),
         test_cases[i].raw_bytes,
         test_cases[i].is_dir,
         test_cases[i].filesize,
         test_cases[i].time);
@@ skipping 1233 matching lines @@
 TEST_P(NetUtilNonUniqueNameTest, IsHostnameNonUnique) {
   const NonUniqueNameTestData& test_data = GetParam();
 
   EXPECT_EQ(test_data.is_unique, IsUnique(test_data.hostname));
 }
 
 INSTANTIATE_TEST_CASE_P(, NetUtilNonUniqueNameTest,
                         testing::ValuesIn(kNonUniqueNameTestData));
 
 }  // namespace net