Encrypted media: avoid resetting video state on audio deinit

content/renderer/pepper/content_decryptor_delegate.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 "content/renderer/pepper/content_decryptor_delegate.h"
 
 #include "base/callback_helpers.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/numerics/safe_conversions.h"
@@ skipping 453 matching lines @@
   plugin_decryption_interface_->InitializeVideoDecoder(pp_instance_,
                                                        &pp_decoder_config,
                                                        pp_resource);
   return true;
 }
 
 bool ContentDecryptorDelegate::DeinitializeDecoder(
     Decryptor::StreamType stream_type) {
   CancelDecode(stream_type);
 
-  natural_size_ = gfx::Size();
+  if (stream_type == Decryptor::kVideo)
+    natural_size_ = gfx::Size();
 
   // TODO(tomfinegan): Add decoder deinitialize request tracking, and get
   // stream type from media stack.
   plugin_decryption_interface_->DeinitializeDecoder(
       pp_instance_, MediaDecryptorStreamTypeToPpStreamType(stream_type), 0);
   return true;
 }
 
 bool ContentDecryptorDelegate::ResetDecoder(Decryptor::StreamType stream_type) {
   CancelDecode(stream_type);
@@ skipping 570 matching lines @@
     const media::Decryptor::AudioBuffers empty_frames;
     audio_decode_cb_.ResetAndReturn().Run(media::Decryptor::kError,
                                           empty_frames);
   }
 
   if (!video_decode_cb_.is_null())
     video_decode_cb_.ResetAndReturn().Run(media::Decryptor::kError, NULL);
 }
 
 }  // namespace content