Add video decoding methods in Decryptor and add DecryptingVideoDecoder.

media/base/filter_collection.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/base/filter_collection.h"
 
 #include "base/logging.h"
 #include "media/base/audio_decoder.h"
 #include "media/base/audio_renderer.h"
 #include "media/base/demuxer.h"
@@ skipping 53 matching lines @@
 
 void FilterCollection::SelectVideoRenderer(scoped_refptr<VideoRenderer>* out) {
   if (video_renderers_.empty()) {
     *out = NULL;
     return;
   }
   *out = video_renderers_.front();
   video_renderers_.pop_front();
 }
 
-FilterCollection::VideoDecoderList*
-FilterCollection::GetVideoDecoders() {
+FilterCollection::VideoDecoderList* FilterCollection::GetVideoDecoders() {
   return &video_decoders_;
 }
 
 }  // namespace media