Use a direct include of strings headers in crypto/, dbus/, device/.

crypto/encryptor_openssl.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/encryptor.h"
 
 #include <openssl/aes.h>
 #include <openssl/evp.h>
 
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "crypto/openssl_util.h"
 #include "crypto/symmetric_key.h"
 
 namespace crypto {
 
 namespace {
 
 const EVP_CIPHER* GetCipherForKey(SymmetricKey* key) {
   switch (key->key().length()) {
     case 16: return EVP_aes_128_cbc();
@@ skipping 104 matching lines @@
 
   out_len += tail_len;
   DCHECK_LE(out_len, static_cast<int>(output_size));
   result.resize(out_len);
 
   output->swap(result);
   return true;
 }
 
 }  // namespace crypto