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

net/base/keygen_handler_win.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/base/keygen_handler.h"
 
 #include <windows.h>
 #include <wincrypt.h>
 #pragma comment(lib, "crypt32.lib")
 #include <rpc.h>
 #pragma comment(lib, "rpcrt4.lib")
 
 #include <list>
 #include <string>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/logging.h"
-#include "base/string_piece.h"
 #include "base/string_util.h"
+#include "base/strings/string_piece.h"
 #include "base/utf_string_conversions.h"
 #include "crypto/capi_util.h"
 #include "crypto/scoped_capi_types.h"
 
 
 namespace net {
 
 // Assigns the contents of a CERT_PUBLIC_KEY_INFO structure for the signing
 // key in |prov| to |output|. Returns true if encoding was successful.
 bool GetSubjectPublicKeyInfo(HCRYPTPROV prov, std::vector<BYTE>* output) {
@@ skipping 183 matching lines @@
       LOG(ERROR) << "Keygen failed: Couldn't convert signed key into base64";
       return std::string();
     }
 
     VLOG(1) << "Keygen succeeded";
     return result;
   }
 }
 
 }  // namespace net