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

net/tools/quic/spdy_utils.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/tools/quic/spdy_utils.h"
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
-#include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_piece.h"
 #include "googleurl/src/gurl.h"
 #include "net/spdy/spdy_frame_builder.h"
 #include "net/spdy/spdy_framer.h"
 #include "net/spdy/spdy_protocol.h"
 #include "net/tools/flip_server/balsa_headers.h"
 
 using base::StringPiece;
 using std::pair;
 using std::string;
 
@@ skipping 219 matching lines @@
   for (BlockIt it = header_block.begin(); it != header_block.end(); ++it) {
    if (!IsSpecialSpdyHeader(it, request_headers)) {
      request_headers->AppendHeader(it->first, it->second);
    }
   }
   return true;
 }
 
 }  // namespace tools
 }  // namespace net