Add real support for uint128.

net/base/int128.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 <iostream>
+#include "base/basictypes.h"
+#include "net/base/int128.h"
+
+const uint128_pod kuint128max = {
+    static_cast<uint64>(GG_LONGLONG(0xFFFFFFFFFFFFFFFF)),
+    static_cast<uint64>(GG_LONGLONG(0xFFFFFFFFFFFFFFFF))
+};
+
+std::ostream& operator<<(std::ostream& o, const uint128& b) {
+  return (o << b.hi_ << "::" << b.lo_);
+}