Add base::TimeDelta::Max().

media/base/buffers.h

 // 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.
 
 // Timestamps are derived directly from the encoded media file and are commonly
 // known as the presentation timestamp (PTS).  Durations are a best-guess and
 // are usually derived from the sample/frame rate of the media file.
 //
 // Due to encoding and transmission errors, it is not guaranteed that timestamps
 // arrive in a monotonically increasing order nor that the next timestamp will
@@ skipping 19 matching lines @@
 
 // TODO(scherkus): Move the contents of this file elsewhere.
 
 // Indicates an invalid or missing timestamp.
 MEDIA_EXPORT extern inline base::TimeDelta kNoTimestamp() {
   return base::TimeDelta::FromMicroseconds(kint64min);
 }
 
 // Represents an infinite stream duration.
 MEDIA_EXPORT extern inline base::TimeDelta kInfiniteDuration() {
-  return base::TimeDelta::FromMicroseconds(kint64max);
+  return base::TimeDelta::Max();
 }
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_BUFFERS_H_