Support for a "preparation" state that can take care of lengthy

operations in NuPlayer and its sources. Sources also can publish their
flags now and the mediaplayer UI will be able to pick up on these.

Change-Id: I4f2b7e5d105dcb4b6c9132cd0e8799efa0c6a14b
diff --git a/media/libmediaplayerservice/nuplayer/StreamingSource.h b/media/libmediaplayerservice/nuplayer/StreamingSource.h
index dc616f7..80b061c 100644
--- a/media/libmediaplayerservice/nuplayer/StreamingSource.h
+++ b/media/libmediaplayerservice/nuplayer/StreamingSource.h
@@ -31,14 +31,13 @@
             const sp<AMessage> &notify,
             const sp<IStreamSource> &source);
 
+    virtual void prepareAsync();
     virtual void start();
 
     virtual status_t feedMoreTSData();
 
     virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
 
-    virtual uint32_t flags() const;
-
 protected:
     virtual ~StreamingSource();