Move more string_util functions to base namespace.

net/http/http_content_disposition.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/http/http_content_disposition.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/strings/string_tokenizer.h"
 #include "base/strings/string_util.h"
@@ skipping 16 matching lines @@
 // decoding a quoted-printable string.  Returns true if the input was valid.
 bool DecodeQEncoding(const std::string& input, std::string* output) {
   std::string temp;
   temp.reserve(input.size());
   for (std::string::const_iterator it = input.begin(); it != input.end();
        ++it) {
     if (*it == '_') {
       temp.push_back(' ');
     } else if (*it == '=') {
       if ((input.end() - it < 3) ||
-          !IsHexDigit(static_cast<unsigned char>(*(it + 1))) ||
-          !IsHexDigit(static_cast<unsigned char>(*(it + 2))))
+          !base::IsHexDigit(static_cast<unsigned char>(*(it + 1))) ||
+          !base::IsHexDigit(static_cast<unsigned char>(*(it + 2))))
         return false;
-      unsigned char ch = HexDigitToInt(*(it + 1)) * 16 +
-                         HexDigitToInt(*(it + 2));
+      unsigned char ch =
+          base::HexDigitToInt(*(it + 1)) * 16 + base::HexDigitToInt(*(it + 2));
       temp.push_back(static_cast<char>(ch));
       ++it;
       ++it;
     } else if (0x20 < *it && *it < 0x7F && *it != '?') {
       // In a Q-encoded word, only printable ASCII characters
       // represent themselves. Besides, space, '=', '_' and '?' are
       // not allowed, but they're already filtered out.
       DCHECK_NE('=', *it);
       DCHECK_NE('?', *it);
       DCHECK_NE('_', *it);
@@ skipping 366 matching lines @@
     }
   }
 
   if (!ext_filename.empty())
     filename_ = ext_filename;
   else
     filename_ = filename;
 }
 
 }  // namespace net