Reland "Add base::TimeDelta::Max()"

content/renderer/media/websourcebuffer_impl.cc

 // Copyright 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 "content/renderer/media/websourcebuffer_impl.h"
 
 #include "base/float_util.h"
 #include "media/filters/chunk_demuxer.h"
 
 namespace content {
 
 static base::TimeDelta DoubleToTimeDelta(double time) {
   DCHECK(!base::IsNaN(time));
   DCHECK_GE(time, 0);
   if (time == std::numeric_limits<double>::infinity())
     return media::kInfiniteDuration();
 
+  // Don't use base::TimeDelta::Max() here, as we want the largest finite time
+  // delta.
   base::TimeDelta max_time = base::TimeDelta::FromInternalValue(kint64max - 1);
   double max_time_in_seconds = max_time.InSecondsF();
 
   if (time >= max_time_in_seconds)
     return max_time;
 
   return base::TimeDelta::FromMicroseconds(
       time * base::Time::kMicrosecondsPerSecond);
 }
 
@@ skipping 63 matching lines @@
 void WebSourceBufferImpl::setAppendWindowEnd(double end) {
   demuxer_->SetAppendWindowEnd(id_, DoubleToTimeDelta(end));
 }
 
 void WebSourceBufferImpl::removedFromMediaSource() {
   demuxer_->RemoveId(id_);
   demuxer_ = NULL;
 }
 
 }  // namespace content