net: Update the include paths of base/string_piece.h to its new location.

net/ftp/ftp_ctrl_response_buffer.cc

 // Copyright (c) 2011 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/ftp/ftp_ctrl_response_buffer.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
-#include "base/string_piece.h"
+#include "base/strings/string_piece.h"
 #include "base/values.h"
 #include "net/base/net_errors.h"
 
 namespace net {
 
 // static
 const int FtpCtrlResponse::kInvalidStatusCode = -1;
 
 FtpCtrlResponse::FtpCtrlResponse() : status_code(kInvalidStatusCode) {}
 
@@ skipping 122 matching lines @@
   for (size_t i = 0; i < buffer_.length(); i++) {
     if (i >= 1 && buffer_[i - 1] == '\r' && buffer_[i] == '\n') {
       lines_.push(ParseLine(buffer_.substr(cut_pos, i - cut_pos - 1)));
       cut_pos = i + 1;
     }
   }
   buffer_.erase(0, cut_pos);
 }
 
 }  // namespace net