Seek/Duration support for completed http live streams in NuPlayer.

Change-Id: I55bbe75d87140c07b1927d14ad24130fce803463
related-to-bug: 3321475
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
index 044e202..5e55487 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
@@ -37,6 +37,18 @@
     virtual status_t dequeueAccessUnit(
             bool audio, sp<ABuffer> *accessUnit) = 0;
 
+    virtual status_t getDuration(int64_t *durationUs) {
+        return INVALID_OPERATION;
+    }
+
+    virtual status_t seekTo(int64_t seekTimeUs) {
+        return INVALID_OPERATION;
+    }
+
+    virtual bool isSeekable() {
+        return false;
+    }
+
 protected:
     virtual ~Source() {}