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

net/tools/flip_server/balsa_headers_token_utils.h

 // Copyright (c) 2009 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.
 
 // Utility class that performs basic operations on header value tokens: parsing
 // them out, checking for presense of certain tokens, and removing them.
 
 #ifndef NET_TOOLS_FLIP_SERVER_BALSA_HEADERS_TOKEN_UTILS_H_
 #define NET_TOOLS_FLIP_SERVER_BALSA_HEADERS_TOKEN_UTILS_H_
 
+#include "base/strings/string_piece.h"
 #include "net/tools/flip_server/balsa_headers.h"
-#include "base/string_piece.h"
 
 namespace net {
 
 class BalsaHeadersTokenUtils {
  public:
   // All the functions below respect multiple header lines with the same key.
 
   // Checks whether the last header token matches a given value. Useful to
   // check the outer-most content or transfer-encoding, for example. In the
   // presence of multiple header lines with given key, the last token of the
@@ skipping 29 matching lines @@
       const BalsaHeaders::HeaderLineDescription& line,
       BalsaHeaders::HeaderTokenList* tokens);
 
   BalsaHeadersTokenUtils();  // Prohibit instantiation
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_FLIP_SERVER_BALSA_HEADERS_TOKEN_UTILS_H_