Make DefaultDeleter for Video{De|En}codeAccelerator

media/video/video_encode_accelerator.cc

 // Copyright 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/video/video_encode_accelerator.h"
 
 namespace media {
 
 VideoEncodeAccelerator::~VideoEncodeAccelerator() {}
 
 }  // namespace media
+
+namespace base {
+
+void DefaultDeleter<media::VideoEncodeAccelerator>::operator()(
+    void* video_encode_accelerator) const {
+  static_cast<media::VideoEncodeAccelerator*>(video_encode_accelerator)->
+      Destroy();
+}
+
+}  // namespace base
+