Adds std:: to stl types (#049)

net/quic/core/crypto/crypto_utils.cc

 // Copyright (c) 2013 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/quic/core/crypto/crypto_utils.h"
 
 #include <memory>
 
 #include "crypto/hkdf.h"
 #include "crypto/secure_hash.h"
@@ skipping 173 matching lines @@
                                        StringPiece context,
                                        size_t result_len,
                                        string* result) {
   for (size_t i = 0; i < label.length(); i++) {
     if (label[i] == '\0') {
       LOG(ERROR) << "ExportKeyingMaterial label may not contain NULs";
       return false;
     }
   }
   // Create HKDF info input: null-terminated label + length-prefixed context
-  if (context.length() >= numeric_limits<uint32_t>::max()) {
+  if (context.length() >= std::numeric_limits<uint32_t>::max()) {
     LOG(ERROR) << "Context value longer than 2^32";
     return false;
   }
   uint32_t context_length = static_cast<uint32_t>(context.length());
   string info = label.as_string();
   info.push_back('\0');
   info.append(reinterpret_cast<char*>(&context_length), sizeof(context_length));
   info.append(context.data(), context.length());
 
   crypto::HKDF hkdf(subkey_secret, StringPiece() /* no salt */, info,
@@ skipping 126 matching lines @@
   const QuicData& serialized = message.GetSerialized();
   std::unique_ptr<crypto::SecureHash> hash(
       crypto::SecureHash::Create(crypto::SecureHash::SHA256));
   hash->Update(serialized.data(), serialized.length());
   uint8_t digest[32];
   hash->Finish(digest, sizeof(digest));
   output->assign(reinterpret_cast<const char*>(&digest), sizeof(digest));
 }
 
 }  // namespace net