Update PluginInstance for audio support for content decryption.

webkit/media/crypto/ppapi/clear_key_cdm.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 "webkit/media/crypto/ppapi/clear_key_cdm.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 270 matching lines @@
   return cdm::kSuccess;
 #else
   NOTIMPLEMENTED();
   return cdm::kSessionError;
 #endif  // CLEAR_KEY_CDM_USE_FFMPEG_DECODER
 
 }
 
 void ClearKeyCdm::ResetDecoder(cdm::StreamType decoder_type) {
 #if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER)
-  DCHECK(decoder_type == cdm::kStreamTypeVideo);
-  video_decoder_->Reset();
+  if (decoder_type == cdm::kStreamTypeVideo)
+    video_decoder_->Reset();
 #endif
 }
 
 void ClearKeyCdm::DeinitializeDecoder(cdm::StreamType decoder_type) {
 #if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER)
-  DCHECK(decoder_type == cdm::kStreamTypeVideo);
-  video_decoder_->Deinitialize();
+  if (decoder_type == cdm::kStreamTypeVideo)
+    video_decoder_->Deinitialize();
 #endif
 }
 
 cdm::Status ClearKeyCdm::DecryptAndDecodeFrame(
     const cdm::InputBuffer& encrypted_buffer,
     cdm::VideoFrame* decoded_frame) {
   DVLOG(1) << "DecryptAndDecodeFrame()";
 
   scoped_refptr<media::DecoderBuffer> buffer;
   cdm::Status status = DecryptToMediaDecoderBuffer(encrypted_buffer, &buffer);
@@ skipping 90 matching lines @@
   static unsigned char color = 0;
   color += 10;
 
   memset(reinterpret_cast<void*>(video_frame->frame_buffer()->data()),
          color, frame_size);
 }
 #endif  // CLEAR_KEY_CDM_USE_FAKE_VIDEO_DECODER
 
 cdm::Status ClearKeyCdm::DecryptAndDecodeSamples(
     const cdm::InputBuffer& encrypted_buffer,
-    cdm::Buffer* sample_buffer) {
+    cdm::AudioFrames* audio_frames) {
   NOTIMPLEMENTED();
   return cdm::kDecryptError;
 }
 
 }  // namespace webkit_media