Fold {Audio|Video}Decoder::Stop() into the dtor.

media/filters/ffmpeg_video_decoder.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/ffmpeg_video_decoder.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 223 matching lines @@
 }
 
 void FFmpegVideoDecoder::Reset(const base::Closure& closure) {
   DCHECK(task_runner_->BelongsToCurrentThread());
 
   avcodec_flush_buffers(codec_context_.get());
   state_ = kNormal;
   task_runner_->PostTask(FROM_HERE, closure);
 }
 
-void FFmpegVideoDecoder::Stop() {
+FFmpegVideoDecoder::~FFmpegVideoDecoder() {
   DCHECK(task_runner_->BelongsToCurrentThread());
 
-  if (state_ == kUninitialized)
-    return;
-
-  ReleaseFFmpegResources();
-  state_ = kUninitialized;
-}
-
-FFmpegVideoDecoder::~FFmpegVideoDecoder() {
-  DCHECK_EQ(kUninitialized, state_);
-  DCHECK(!codec_context_);
-  DCHECK(!av_frame_);
+  if (state_ != kUninitialized)
+    ReleaseFFmpegResources();
 }
 
 bool FFmpegVideoDecoder::FFmpegDecode(
     const scoped_refptr<DecoderBuffer>& buffer,
     bool* has_produced_frame) {
   DCHECK(!*has_produced_frame);
 
   // Create a packet for input data.
   // Due to FFmpeg API changes we no longer have const read-only pointers.
   AVPacket packet;
@@ skipping 82 matching lines @@
   if (!codec || avcodec_open2(codec_context_.get(), codec, NULL) < 0) {
     ReleaseFFmpegResources();
     return false;
   }
 
   av_frame_.reset(av_frame_alloc());
   return true;
 }
 
 }  // namespace media