Add Decryptor interface.

webkit/media/webmediaplayer_proxy.cc

Index: webkit/media/webmediaplayer_proxy.cc
diff --git a/webkit/media/webmediaplayer_proxy.cc b/webkit/media/webmediaplayer_proxy.cc
index 054cf53bd691b42672d211cd46ec168a52ccb4ae..1d4a0c8d515d45e03019f3e8dad11b37b62aa667 100644
--- a/webkit/media/webmediaplayer_proxy.cc
+++ b/webkit/media/webmediaplayer_proxy.cc
@@ -257,7 +257,7 @@ void WebMediaPlayerProxy::KeyAdded(const std::string& key_system,
 
 void WebMediaPlayerProxy::KeyError(const std::string& key_system,
                                    const std::string& session_id,
-                                   media::AesDecryptor::KeyError error_code,
+                                   media::Decryptor::KeyError error_code,
                                    int system_code) {
   render_loop_->PostTask(FROM_HERE, base::Bind(
       &WebMediaPlayerProxy::KeyErrorTask, this, key_system, session_id,
@@ -292,7 +292,7 @@ void WebMediaPlayerProxy::KeyAddedTask(const std::string& key_system,
 
 void WebMediaPlayerProxy::KeyErrorTask(const std::string& key_system,
                                        const std::string& session_id,
-                                       media::AesDecryptor::KeyError error_code,
+                                       media::Decryptor::KeyError error_code,
                                        int system_code) {
   DCHECK(render_loop_->BelongsToCurrentThread());
   if (webmediaplayer_)