Rename EME WD call parameters

content/renderer/media/webcontentdecryptionmodulesession_impl.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 CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "media/base/media_keys.h"
 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 
 namespace media {
 class MediaKeys;
 }
 
 namespace content {
 
 class WebContentDecryptionModuleSessionImpl
     : public blink::WebContentDecryptionModuleSession {
  public:
-  typedef base::Callback<void(uint32 reference_id)> SessionClosedCB;
+  typedef base::Callback<void(uint32 session_id)> SessionClosedCB;
 
   WebContentDecryptionModuleSessionImpl(
+      uint32 session_id,
       media::MediaKeys* media_keys,
       Client* client,
       const SessionClosedCB& session_closed_cb);
   virtual ~WebContentDecryptionModuleSessionImpl();
 
   // blink::WebContentDecryptionModuleSession implementation.
   virtual blink::WebString sessionId() const OVERRIDE;
   virtual void generateKeyRequest(const blink::WebString& mime_type,
                                   const uint8* init_data,
                                   size_t init_data_length) OVERRIDE;
   virtual void update(const uint8* response, size_t response_length) OVERRIDE;
   virtual void close() OVERRIDE;
 
-  const std::string& session_id() const { return session_id_; }
-
-  uint32 reference_id() const { return reference_id_; }
-
   // Callbacks.
-  void OnSessionCreated(const std::string& session_id);
+  void OnSessionCreated(const std::string& web_session_id);
   void OnSessionMessage(const std::vector<uint8>& message,
                         const std::string& destination_url);
   void OnSessionReady();
   void OnSessionClosed();
   void OnSessionError(media::MediaKeys::KeyError error_code, int system_code);
 
  private:
   // Non-owned pointers.
   media::MediaKeys* media_keys_;
   Client* client_;
 
   SessionClosedCB session_closed_cb_;
 
-  // Session ID is the user visible ID for this session generated by the CDM.
+  // Web session ID is the app visible ID for this session generated by the CDM.
   // This value is not set until the CDM calls OnSessionCreated().
-  std::string session_id_;
+  blink::WebString web_session_id_;
 
-  // Reference ID is used to uniquely track this object so that CDM callbacks
+  // Session ID is used to uniquely track this object so that CDM callbacks
   // can get routed to the correct object.
-  const uint32 reference_id_;
-
-  // Reference ID should be unique per renderer process for debugging purposes.
-  static uint32 next_reference_id_;
+  const uint32 session_id_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_