Make DefaultDeleter for Video{De|En}codeAccelerator

media/filters/gpu_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/gpu_video_decoder.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 194 matching lines @@
        ++it) {
     factories_->DeleteTexture(it->second.texture_id());
   }
 
   buffers->clear();
 }
 
 void GpuVideoDecoder::DestroyVDA() {
   DCheckGpuVideoAcceleratorFactoriesTaskRunnerIsCurrent();
 
-  if (vda_)
-    vda_.release()->Destroy();
+  vda_.reset();
 
   // Not destroying PictureBuffers in |picture_buffers_at_display_| yet, since
   // their textures may still be in use by the user of this GpuVideoDecoder.
   for (PictureBufferTextureMap::iterator it =
            picture_buffers_at_display_.begin();
        it != picture_buffers_at_display_.end();
        ++it) {
     assigned_picture_buffers_.erase(it->first);
   }
   DestroyPictureBuffers(&assigned_picture_buffers_);
@@ skipping 420 matching lines @@
     return;
   }
 }
 
 void GpuVideoDecoder::DCheckGpuVideoAcceleratorFactoriesTaskRunnerIsCurrent()
     const {
   DCHECK(factories_->GetTaskRunner()->BelongsToCurrentThread());
 }
 
 }  // namespace media