Allow multiple concurrent Decode() requests in VideoDecoder interface.

media/filters/fake_demuxer_stream.cc

 // Copyright (c) 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 "media/filters/fake_demuxer_stream.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 93 matching lines @@
 
 void FakeDemuxerStream::SatisfyRead() {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(read_to_hold_, next_read_num_);
   DCHECK(!read_cb_.is_null());
 
   read_to_hold_ = -1;
   DoRead();
 }
 
+void FakeDemuxerStream::SatisfyReadAndHoldNext() {
+  DCHECK(task_runner_->BelongsToCurrentThread());
+  DCHECK_EQ(read_to_hold_, next_read_num_);
+  DCHECK(!read_cb_.is_null());
+
+  ++read_to_hold_;
+  DoRead();
+}
+
 void FakeDemuxerStream::Reset() {
   read_to_hold_ = -1;
 
   if (!read_cb_.is_null())
     base::ResetAndReturn(&read_cb_).Run(kAborted, NULL);
 }
 
 void FakeDemuxerStream::UpdateVideoDecoderConfig() {
   const gfx::Rect kVisibleRect(kStartWidth, kStartHeight);
   video_decoder_config_.Initialize(
@@ skipping 40 matching lines @@
 
   num_buffers_left_in_current_config_--;
   if (num_buffers_left_in_current_config_ == 0)
     num_configs_left_--;
 
   num_buffers_returned_++;
   base::ResetAndReturn(&read_cb_).Run(kOk, buffer);
 }
 
 }  // namespace media