Add Chromium-side support for SourceBuffer.appendWindowStart and SourceBuffer.appendWindowEnd.

media/mp4/track_run_iterator.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 "media/mp4/track_run_iterator.h"
 
 #include <algorithm>
 
 #include "media/base/buffers.h"
 #include "media/base/stream_parser_buffer.h"
@@ skipping 325 matching lines @@
     if (next_run != runs_.end()) {
       offset = std::min(offset, next_run->sample_start_offset);
       if (next_run->aux_info_total_size)
         offset = std::min(offset, next_run->aux_info_start_offset);
     }
   }
   if (offset == kint64max) return 0;
   return offset;
 }
 
-TimeDelta TrackRunIterator::GetMinDecodeTimestamp() {
-  TimeDelta dts = kInfiniteDuration();
-  for (size_t i = 0; i < runs_.size(); i++) {
-    dts = std::min(dts, TimeDeltaFromRational(runs_[i].start_dts,
-                                              runs_[i].timescale));
-  }
-  return dts;
-}
-
 uint32 TrackRunIterator::track_id() const {
   DCHECK(IsRunValid());
   return run_itr_->track_id;
 }
 
 bool TrackRunIterator::is_encrypted() const {
   DCHECK(IsRunValid());
   return track_encryption().is_encrypted;
 }
 
@@ skipping 76 matching lines @@
   return scoped_ptr<DecryptConfig>(new DecryptConfig(
       std::string(reinterpret_cast<const char*>(&kid[0]), kid.size()),
       std::string(reinterpret_cast<const char*>(cenc_info.iv),
                   arraysize(cenc_info.iv)),
       0,  // No offset to start of media data in MP4 using CENC.
       cenc_info.subsamples));
 }
 
 }  // namespace mp4
 }  // namespace media