Land Recent QUIC changes.

net/quic/quic_ack_notifier.cc

Index: net/quic/quic_ack_notifier.cc
diff --git a/net/quic/quic_ack_notifier.cc b/net/quic/quic_ack_notifier.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9509d57cded6ced6b1dcf78f4a4bd98ba94127f1
--- /dev/null
+++ b/net/quic/quic_ack_notifier.cc
@@ -0,0 +1,56 @@
+// 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/quic_ack_notifier.h"
+
+namespace net {
+
+QuicAckNotifier::DelegateInterface::DelegateInterface() {}
+
+QuicAckNotifier::DelegateInterface::~DelegateInterface() {}
+
+QuicAckNotifier::QuicAckNotifier(DelegateInterface* delegate)
+    : delegate_(delegate) {
+  DCHECK(delegate_);
+}
+
+QuicAckNotifier::~QuicAckNotifier() {}
+
+void QuicAckNotifier::AddSequenceNumber(
+    const QuicPacketSequenceNumber& sequence_number) {
+  sequence_numbers_.insert(sequence_number);
+}
+
+void QuicAckNotifier::AddSequenceNumbers(
+    const SequenceNumberSet& sequence_numbers) {
+  for (SequenceNumberSet::const_iterator it = sequence_numbers.begin();
+       it != sequence_numbers.end(); ++it) {
+    AddSequenceNumber(*it);
+  }
+}
+
+bool QuicAckNotifier::OnAck(SequenceNumberSet sequence_numbers) {
+  // If the set of sequence numbers we are tracking is empty then this
+  // QuicAckNotifier should have already been deleted.
+  DCHECK(!sequence_numbers_.empty());
+
+  for (SequenceNumberSet::iterator it = sequence_numbers.begin();
+       it != sequence_numbers.end(); ++it) {
+    sequence_numbers_.erase(*it);
+    if (sequence_numbers_.empty()) {
+      delegate_->OnAckNotification();
+      return true;
+    }
+  }
+  return false;
+}
+
+void QuicAckNotifier::UpdateSequenceNumber(
+    QuicPacketSequenceNumber old_sequence_number,
+    QuicPacketSequenceNumber new_sequence_number) {
+  sequence_numbers_.erase(old_sequence_number);
+  sequence_numbers_.insert(new_sequence_number);
+}
+
+};  // namespace net