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

net/base/net_util.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 <algorithm>
 #include <iterator>
 #include <map>
 
@@ skipping 1077 matching lines @@
       NetModule::GetResource(IDR_DIR_HEADER_HTML));
   // This can be null in unit tests.
   DLOG_IF(WARNING, header.empty()) <<
       "Missing resource: directory listing header";
 
   std::string result;
   if (!header.empty())
     result.assign(header.data(), header.size());
 
   result.append("<script>start(");
-  base::JsonDoubleQuote(title, true, &result);
+  base::EscapeJSONString(title, true, &result);
   result.append(");</script>\n");
 
   return result;
 }
 
 inline bool IsHostCharAlphanumeric(char c) {
   // We can just check lowercase because uppercase characters have already been
   // normalized.
   return ((c >= 'a') && (c <= 'z')) || ((c >= '0') && (c <= '9'));
 }
@@ skipping 33 matching lines @@
       (!desired_tld.empty() && IsHostCharAlphanumeric(desired_tld[0]));
 }
 
 std::string GetDirectoryListingEntry(const base::string16& name,
                                      const std::string& raw_bytes,
                                      bool is_dir,
                                      int64 size,
                                      Time modified) {
   std::string result;
   result.append("<script>addRow(");
-  base::JsonDoubleQuote(name, true, &result);
+  base::EscapeJSONString(name, true, &result);
   result.append(",");
   if (raw_bytes.empty()) {
-    base::JsonDoubleQuote(EscapePath(UTF16ToUTF8(name)),
-                                   true, &result);
+    base::EscapeJSONString(EscapePath(UTF16ToUTF8(name)), true, &result);
   } else {
-    base::JsonDoubleQuote(EscapePath(raw_bytes), true, &result);
+    base::EscapeJSONString(EscapePath(raw_bytes), true, &result);
   }
   if (is_dir) {
     result.append(",1,");
   } else {
     result.append(",0,");
   }
 
   // Negative size means unknown or not applicable (e.g. directory).
   base::string16 size_string;
   if (size >= 0)
     size_string = FormatBytesUnlocalized(size);
-  base::JsonDoubleQuote(size_string, true, &result);
+  base::EscapeJSONString(size_string, true, &result);
 
   result.append(",");
 
   base::string16 modified_str;
   // |modified| can be NULL in FTP listings.
   if (!modified.is_null()) {
     modified_str = base::TimeFormatShortDateAndTime(modified);
   }
-  base::JsonDoubleQuote(modified_str, true, &result);
+  base::EscapeJSONString(modified_str, true, &result);
 
   result.append(");</script>\n");
 
   return result;
 }
 
 base::string16 StripWWW(const base::string16& text) {
   const base::string16 www(ASCIIToUTF16("www."));
   return StartsWith(text, www, true) ? text.substr(www.length()) : text;
 }
@@ skipping 1024 matching lines @@
   }
   return a1.size() * CHAR_BIT;
 }
 
 unsigned MaskPrefixLength(const IPAddressNumber& mask) {
   IPAddressNumber all_ones(mask.size(), 0xFF);
   return CommonPrefixLength(mask, all_ones);
 }
 
 }  // namespace net