Support LoadSession() in MediaKeys and PPP_ContentDecryptor_Private interface.

ppapi/cpp/private/content_decryptor_private.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 PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_
 #define PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_
 
 #include "ppapi/c/private/pp_content_decryptor.h"
 #include "ppapi/c/private/ppb_content_decryptor_private.h"
 #include "ppapi/c/private/ppp_content_decryptor_private.h"
@@ skipping 15 matching lines @@
   explicit ContentDecryptor_Private(Instance* instance);
   virtual ~ContentDecryptor_Private();
 
   // PPP_ContentDecryptor_Private functions exposed as virtual functions
   // for you to override.
   // TODO(tomfinegan): This could be optimized to pass pp::Var instead of
   // strings. The change would allow the CDM wrapper to reuse vars when
   // replying to the browser.
   virtual void Initialize(const std::string& key_system) = 0;
   virtual void CreateSession(uint32_t session_id,
-                             const std::string& type,
+                             const std::string& content_type,
                              pp::VarArrayBuffer init_data) = 0;
+  virtual void LoadSession(uint32_t session_id,
+                           const std::string& web_session_id) = 0;

[dmichael (off chromium), 2014/02/10 23:56:50]

Don't you need a corresponding change to the body? Without it, I think when the
browser calls LoadSession, it will be dereferencing garbage memory.

[xhwang, 2014/02/11 00:09:55]

Done. I accidentally reverted the change in the implementations. Thanks for
catching that.

   virtual void UpdateSession(uint32_t session_id,
                              pp::VarArrayBuffer response) = 0;
   virtual void ReleaseSession(uint32_t session_id) = 0;
   virtual void Decrypt(pp::Buffer_Dev encrypted_buffer,
                        const PP_EncryptedBlockInfo& encrypted_block_info) = 0;
   virtual void InitializeAudioDecoder(
       const PP_AudioDecoderConfig& decoder_config,
       pp::Buffer_Dev extra_data_resource) = 0;
   virtual void InitializeVideoDecoder(
       const PP_VideoDecoderConfig& decoder_config,
@@ skipping 46 matching lines @@
   void DeliverSamples(pp::Buffer_Dev audio_frames,
                       const PP_DecryptedSampleInfo& decrypted_sample_info);
 
  private:
   InstanceHandle associated_instance_;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_PRIVATE_CONTENT_DECRYPTOR_PRIVATE_H_