QUIC - (no behavior change) s/NULL/nullptr/g in .../quic/...

net/quic/test_tools/mock_crypto_client_stream_factory.cc

Index: net/quic/test_tools/mock_crypto_client_stream_factory.cc
diff --git a/net/quic/test_tools/mock_crypto_client_stream_factory.cc b/net/quic/test_tools/mock_crypto_client_stream_factory.cc
index 302ed07e9aa682470cd0d5bbcfd0083ac08755db..5088c4347c8ef27cd4d761230c20cca6aa6681b2 100644
--- a/net/quic/test_tools/mock_crypto_client_stream_factory.cc
+++ b/net/quic/test_tools/mock_crypto_client_stream_factory.cc
@@ -15,8 +15,8 @@ namespace net {
 
 MockCryptoClientStreamFactory::MockCryptoClientStreamFactory()
     : handshake_mode_(MockCryptoClientStream::CONFIRM_HANDSHAKE),
-      last_stream_(NULL),
-      proof_verify_details_(NULL) {
+      last_stream_(nullptr),
+      proof_verify_details_(nullptr) {
 }
 
 QuicCryptoClientStream*
@@ -25,7 +25,7 @@ MockCryptoClientStreamFactory::CreateQuicCryptoClientStream(
     QuicClientSession* session,
     QuicCryptoClientConfig* crypto_config) {
   last_stream_ = new MockCryptoClientStream(
-      server_id, session, NULL, crypto_config, handshake_mode_,
+      server_id, session, nullptr, crypto_config, handshake_mode_,
       proof_verify_details_);
   return last_stream_;
 }