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

crypto/openssl_util.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 "crypto/openssl_util.h"
 
 #include <openssl/err.h>
 #include <openssl/ssl.h>
 
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/singleton.h"
-#include "base/string_piece.h"
+#include "base/strings/string_piece.h"
 #include "base/synchronization/lock.h"
 
 namespace crypto {
 
 namespace {
 
 unsigned long CurrentThreadId() {
   return static_cast<unsigned long>(base::PlatformThread::CurrentId());
 }
 
@@ skipping 80 matching lines @@
     std::string message;
     location.Write(true, true, &message);
     DVLOG(1) << "OpenSSL ERR_get_error stack from " << message;
     ERR_print_errors_cb(&OpenSSLErrorCallback, NULL);
   } else {
     ERR_clear_error();
   }
 }
 
 }  // namespace crypto