Fix ChunkDemuxer to handle a Shutdown() call before Initialize() is called.

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 543 matching lines @@
       need_key_cb_(need_key_cb),
       log_cb_(log_cb) {
   DCHECK(!open_cb_.is_null());
   DCHECK(!need_key_cb_.is_null());
 }
 
 void ChunkDemuxer::Initialize(DemuxerHost* host, const PipelineStatusCB& cb) {
   DVLOG(1) << "Init()";
 
   base::AutoLock auto_lock(lock_);
+
+  if (state_ == SHUTDOWN) {
+    base::MessageLoopProxy::current()->PostTask(FROM_HERE, base::Bind(
+        cb, DEMUXER_ERROR_COULD_NOT_OPEN));
+    return;
+  }
   DCHECK_EQ(state_, WAITING_FOR_INIT);
   host_ = host;
 
   ChangeState_Locked(INITIALIZING);
   init_cb_ = cb;
 
   base::ResetAndReturn(&open_cb_).Run();
 }
 
 void ChunkDemuxer::Stop(const base::Closure& callback) {
@@ skipping 666 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