Land Recent QUIC changes.

net/quic/quic_time.cc

 // Copyright (c) 2012 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_time.h"
 
 #include "base/logging.h"
 
 namespace net {
 
@@ skipping 86 matching lines @@
 
 QuicTime::Delta QuicTime::Subtract(const QuicTime& other) const {
   return QuicTime::Delta(ticks_ - other.ticks_);
 }
 
 // static
 QuicWallTime QuicWallTime::FromUNIXSeconds(uint64 seconds) {
   return QuicWallTime(seconds);
 }
 
+// static
+QuicWallTime QuicWallTime::Zero() {
+  return QuicWallTime(0);
+}
+
 uint64 QuicWallTime::ToUNIXSeconds() const {
   return seconds_;
 }
 
 bool QuicWallTime::IsAfter(QuicWallTime other) const {
   return seconds_ > other.seconds_;
 }
 
 bool QuicWallTime::IsBefore(QuicWallTime other) const {
   return seconds_ < other.seconds_;
 }
 
+bool QuicWallTime::IsZero() const {
+  return seconds_ == 0;
+}
+
 QuicTime::Delta QuicWallTime::AbsoluteDifference(QuicWallTime other) const {
   uint64 d;
 
   if (seconds_ > other.seconds_) {
     d = seconds_ - other.seconds_;
   } else {
     d = other.seconds_ - seconds_;
   }
 
   if (d > static_cast<uint64>(kint64max)) {
@@ skipping 16 matching lines @@
     seconds = 0;
   }
   return QuicWallTime(seconds);
 }
 
 QuicWallTime::QuicWallTime(uint64 seconds)
     : seconds_(seconds) {
 }
 
 }  // namespace net