EME: ProxyDecryptor creates MediaKeys instead of Decryptor.

media/base/media_keys.h

 // Copyright 2013 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_BASE_MEDIA_KEYS_H_
 #define MEDIA_BASE_MEDIA_KEYS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
 
 namespace media {
 
+class Decryptor;
+
 // Performs media key operations.
 //
 // All key operations are called on the renderer thread. Therefore, these calls
 // should be fast and nonblocking; key events should be fired asynchronously.
 class MEDIA_EXPORT MediaKeys {
  public:
   // Reported to UMA, so never reuse a value!
   // Must be kept in sync with WebKit::WebMediaPlayerClient::MediaKeyErrorCode
   // (enforced in webmediaplayer_impl.cc).
   enum KeyError {
@@ skipping 25 matching lines @@
   // key ID, the older key will be replaced by the newer key.
   virtual void AddKey(const std::string& key_system,
                       const uint8* key, int key_length,
                       const uint8* init_data, int init_data_length,
                       const std::string& session_id) = 0;
 
   // Cancels the key request specified by |session_id|.
   virtual void CancelKeyRequest(const std::string& key_system,
                                 const std::string& session_id) = 0;
 
+  // Gets the Decryptor object associated with the MediaKeys. Returns NULL if
+  // no Decryptor object is associated. The returned object is only guaranteed
+  // to be valid during the MediaKeys' lifetime.
+  virtual Decryptor* GetDecryptor();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(MediaKeys);
 };
 
 // Key event callbacks. See the spec for details:
 // http://dvcs.w3.org/hg/html-media/raw-file/eme-v0.1b/encrypted-media/encrypted-media.html#event-summary
 typedef base::Callback<void(const std::string& key_system,
                             const std::string& session_id)> KeyAddedCB;
 
 typedef base::Callback<void(const std::string& key_system,
                             const std::string& session_id,
                             media::MediaKeys::KeyError error_code,
                             int system_code)> KeyErrorCB;
 
 typedef base::Callback<void(const std::string& key_system,
                             const std::string& session_id,
                             const std::string& message,
                             const std::string& default_url)> KeyMessageCB;
 
 typedef base::Callback<void(const std::string& key_system,
                             const std::string& session_id,
                             const std::string& type,
                             scoped_ptr<uint8[]> init_data,
                             int init_data_size)> NeedKeyCB;
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_KEYS_H_