Set callback interface on WebCDMSessionImpl after creation.

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 <map>
 #include <string>
 #include <vector>
@@ skipping 10 matching lines @@
 class MediaKeys;
 }
 
 namespace content {
 class CdmSessionAdapter;
 
 class WebContentDecryptionModuleSessionImpl
     : public blink::WebContentDecryptionModuleSession {
  public:
   WebContentDecryptionModuleSessionImpl(
-      Client* client,
       const scoped_refptr<CdmSessionAdapter>& adapter);
   virtual ~WebContentDecryptionModuleSessionImpl();
 
   // blink::WebContentDecryptionModuleSession implementation.
+  virtual void setClientInterface(Client* client);
   virtual blink::WebString sessionId() const;
   // TODO(jrummell): Remove the next 3 methods once blink updated.
   virtual void initializeNewSession(const blink::WebString& mime_type,
                                     const uint8* init_data,
                                     size_t init_data_length);
   virtual void update(const uint8* response, size_t response_length);
   virtual void release();
   virtual void initializeNewSession(
       const blink::WebString& init_data_type,
       const uint8* init_data,
@@ skipping 57 matching lines @@
   // creating a promise in case this class disappears before the promise
   // actually fires.
   base::WeakPtrFactory<WebContentDecryptionModuleSessionImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_