MediaPlayer2: support start position of data source

Test: cts
Bug: 112549021
Change-Id: I4062fab27aff101223cfb3924841c8e7c3afa6ce
diff --git a/media/libmediaplayer2/nuplayer2/HTTPLiveSource2.cpp b/media/libmediaplayer2/nuplayer2/HTTPLiveSource2.cpp
index a61cacd..175be53 100644
--- a/media/libmediaplayer2/nuplayer2/HTTPLiveSource2.cpp
+++ b/media/libmediaplayer2/nuplayer2/HTTPLiveSource2.cpp
@@ -99,7 +99,8 @@
     return OK;
 }
 
-void NuPlayer2::HTTPLiveSource2::prepareAsync() {
+// TODO: fetch data starting from |startTimeUs|
+void NuPlayer2::HTTPLiveSource2::prepareAsync(int64_t /* startTimeUs */) {
     if (mLiveLooper == NULL) {
         mLiveLooper = new ALooper;
         mLiveLooper->setName("http live");