fix clang warnings for chrome on android

net/http/http_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.
 
 // The rules for parsing content-types were borrowed from Firefox:
 // http://lxr.mozilla.org/mozilla/source/netwerk/base/src/nsURLHelper.cpp#834
 
 #include "net/http/http_util.h"
 
 #include <algorithm>
@@ skipping 805 matching lines @@
   }
   return false;
 }
 
 HttpUtil::NameValuePairsIterator::NameValuePairsIterator(
     string::const_iterator begin,
     string::const_iterator end,
     char delimiter)
     : props_(begin, end, delimiter),
       valid_(true),
-      begin_(begin),
-      end_(end),
       name_begin_(end),
       name_end_(end),
       value_begin_(end),
       value_end_(end),
       value_is_quoted_(false) {
 }
 
 HttpUtil::NameValuePairsIterator::~NameValuePairsIterator() {}
 
 // We expect properties to be formatted as one of:
@@ skipping 51 matching lines @@
       value_is_quoted_ = true;
       // Do not store iterators into this. See declaration of unquoted_value_.
       unquoted_value_ = HttpUtil::Unquote(value_begin_, value_end_);
     }
   }
 
   return true;
 }
 
 }  // namespace net