Update PluginInstance for audio support for content decryption.

webkit/media/crypto/ppapi/content_decryption_module.h

 // 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.
 
 #ifndef WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_
 #define WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_
 
 #if defined(_MSC_VER)
 typedef unsigned char uint8_t;
 typedef unsigned int uint32_t;
@@ skipping 311 matching lines @@
   //
   // |<------------------- serialized audio buffer ------------------->|
   // | int64_t timestamp | int64_t length | length bytes of audio data |
   //
   // For example, with three audio output buffers, |audio_frames| will look
   // like this:
   //
   // |<---------------- audio_frames ------------------>|
   // | audio buffer 0 | audio buffer 1 | audio buffer 2 |
   virtual Status DecryptAndDecodeSamples(const InputBuffer& encrypted_buffer,
-                                         Buffer* audio_frames) = 0;
+                                         DecryptedBlock* audio_frames) = 0;

[xhwang, 2012/10/21 19:05:06]

Need this change because cdm::Buffer doesn't support set_buffer(). 

 
   virtual ~ContentDecryptionModule() {}
 };
 
 // Represents a buffer created by Allocator implementations.
 class Buffer {
  public:
   // Destroys the buffer in the same context as it was created.
   virtual void Destroy() = 0;
 
@@ skipping 98 matching lines @@
   virtual int64_t timestamp() const = 0;
 
  protected:
    VideoFrame() {}
    virtual ~VideoFrame() {}
 };
 
 }  // namespace cdm
 
 #endif  // WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_