[Cast] Repurpose CastInitializationStatus for variable frame size support.

media/cast/receiver/audio_decoder.h

 // Copyright 2014 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.
 
 #ifndef MEDIA_CAST_RECEIVER_AUDIO_DECODER_H_
 #define MEDIA_CAST_RECEIVER_AUDIO_DECODER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "media/base/audio_bus.h"
@@ skipping 14 matching lines @@
   // in this case.
   typedef base::Callback<void(scoped_ptr<AudioBus> audio_bus,
                               bool is_continuous)> DecodeFrameCallback;
 
   AudioDecoder(const scoped_refptr<CastEnvironment>& cast_environment,
                int channels,
                int sampling_rate,
                Codec codec);
   virtual ~AudioDecoder();
 
-  // Returns STATUS_AUDIO_INITIALIZED if the decoder was successfully
-  // constructed from the given FrameReceiverConfig.  If this method returns any
-  // other value, calls to DecodeFrame() will not succeed.
-  CastInitializationStatus InitializationResult() const;
+  // Returns STATUS_INITIALIZED if the decoder was successfully constructed from
+  // the given FrameReceiverConfig.  If this method returns any other value,
+  // calls to DecodeFrame() will not succeed.
+  OperationalStatus InitializationResult() const;
 
   // Decode the payload in |encoded_frame| asynchronously.  |callback| will be
   // invoked on the CastEnvironment::MAIN thread with the result.
   //
   // In the normal case, |encoded_frame->frame_id| will be
   // monotonically-increasing by 1 for each successive call to this method.
   // When it is not, the decoder will assume one or more frames have been
   // dropped (e.g., due to packet loss), and will perform recovery actions.
   void DecodeFrame(scoped_ptr<EncodedFrame> encoded_frame,
                    const DecodeFrameCallback& callback);
 
  private:
   class ImplBase;
   class OpusImpl;
   class Pcm16Impl;
 
   const scoped_refptr<CastEnvironment> cast_environment_;
   scoped_refptr<ImplBase> impl_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDecoder);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_RECEIVER_AUDIO_DECODER_H_