Delete some unused code found by -Wunused-function

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 147 matching lines @@
   0xFFFF, // Used to block all invalid port numbers (see
           // third_party/WebKit/Source/WebCore/platform/KURLGoogle.cpp, port())
 };
 
 // FTP overrides the following restricted ports.
 static const int kAllowedFtpPorts[] = {
   21,   // ftp data
   22,   // ssh
 };
 
+#if defined(OS_WIN)
 std::string::size_type CountTrailingChars(
     const std::string& input,
     const std::string::value_type trailing_chars[]) {
   const size_t last_good_char = input.find_last_not_of(trailing_chars);
   return (last_good_char == std::string::npos) ?
       input.length() : (input.length() - last_good_char - 1);
 }
+#endif
 
 // Similar to Base64Decode. Decodes a Q-encoded string to a sequence
 // of bytes. If input is invalid, return false.
 bool QPDecode(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(' ');
@@ skipping 2255 matching lines @@
 
 NetworkInterface::NetworkInterface(const std::string& name,
                                    const IPAddressNumber& address)
     : name(name), address(address) {
 }
 
 NetworkInterface::~NetworkInterface() {
 }
 
 }  // namespace net