Update from https://crrev.com/316786

net/quic/crypto/aead_base_encrypter_nss.cc

Index: net/quic/crypto/aead_base_encrypter_nss.cc
diff --git a/net/quic/crypto/aead_base_encrypter_nss.cc b/net/quic/crypto/aead_base_encrypter_nss.cc
index 1e408ad36f4b25dbda0e7e6242fd80acb5c4de72..ca2e2a9cca9d870de655c3b39f9aef7891c2c1e1 100644
--- a/net/quic/crypto/aead_base_encrypter_nss.cc
+++ b/net/quic/crypto/aead_base_encrypter_nss.cc
@@ -110,27 +110,28 @@ bool AeadBaseEncrypter::Encrypt(StringPiece nonce,
   return true;
 }
 
-QuicData* AeadBaseEncrypter::EncryptPacket(
-    QuicPacketSequenceNumber sequence_number,
-    StringPiece associated_data,
-    StringPiece plaintext) {
+bool AeadBaseEncrypter::EncryptPacket(QuicPacketSequenceNumber sequence_number,
+                                      StringPiece associated_data,
+                                      StringPiece plaintext,
+                                      char* output,
+                                      size_t* output_length,
+                                      size_t max_output_length) {
   size_t ciphertext_size = GetCiphertextSize(plaintext.length());
-  scoped_ptr<char[]> ciphertext(new char[ciphertext_size]);
-
+  if (max_output_length < ciphertext_size) {
+    return false;
+  }
   // TODO(ianswett): Introduce a check to ensure that we don't encrypt with the
   // same sequence number twice.
-  uint8 nonce[sizeof(nonce_prefix_) + sizeof(sequence_number)];
   const size_t nonce_size = nonce_prefix_size_ + sizeof(sequence_number);
-  DCHECK_LE(nonce_size, sizeof(nonce));
-  memcpy(nonce, nonce_prefix_, nonce_prefix_size_);
-  memcpy(nonce + nonce_prefix_size_, &sequence_number, sizeof(sequence_number));
-  if (!Encrypt(StringPiece(reinterpret_cast<char*>(nonce), nonce_size),
-               associated_data, plaintext,
-               reinterpret_cast<unsigned char*>(ciphertext.get()))) {
-    return nullptr;
+  memcpy(output, nonce_prefix_, nonce_prefix_size_);
+  memcpy(output + nonce_prefix_size_, &sequence_number,
+         sizeof(sequence_number));
+  if (!Encrypt(StringPiece(output, nonce_size), associated_data, plaintext,
+               reinterpret_cast<unsigned char*>(output))) {
+    return false;
   }
-
-  return new QuicData(ciphertext.release(), ciphertext_size, true);
+  *output_length = ciphertext_size;
+  return true;
 }
 
 size_t AeadBaseEncrypter::GetKeySize() const { return key_size_; }