Clear source_id_{audio,video}_ after RemoveId.

media/filters/chunk_demuxer.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/filters/chunk_demuxer.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
@@ skipping 695 matching lines @@
 }
 
 void ChunkDemuxer::RemoveId(const std::string& id) {
   CHECK(IsValidId(id));
   base::AutoLock auto_lock(lock_);
 
   delete stream_parser_map_[id];
   stream_parser_map_.erase(id);
   source_info_map_.erase(id);
 
-  if (source_id_audio_ == id && audio_)
-    audio_->Shutdown();
+  if (source_id_audio_ == id) {
+    if (audio_)
+      audio_->Shutdown();
+    source_id_audio_.clear();
+  }
 
-  if (source_id_video_ == id && video_)
-    video_->Shutdown();
+  if (source_id_video_ == id) {
+    if (video_)
+      video_->Shutdown();
+    source_id_video_.clear();
+  }
 }
 
 Ranges<TimeDelta> ChunkDemuxer::GetBufferedRanges(const std::string& id) const {
   DCHECK(!id.empty());
   DCHECK(IsValidId(id));
   DCHECK(id == source_id_audio_ || id == source_id_video_);
 
   base::AutoLock auto_lock(lock_);
 
   if (id == source_id_audio_ && id != source_id_video_) {
@@ skipping 462 matching lines @@
 
 Ranges<TimeDelta> ChunkDemuxer::GetBufferedRanges() const {
   if (audio_ && !video_)
     return audio_->GetBufferedRanges(duration_);
   else if (!audio_ && video_)
     return video_->GetBufferedRanges(duration_);
   return ComputeIntersection();
 }
 
 }  // namespace media